Knowledge × Reason

Knowledge and Reason

Browse 30 quotations catalogued under knowledge with "reason" in the text or topic label. Read matching entries and available source details.

30 quotes

This collection contains 30 quotations filed under Knowledge with "reason" in the quote text or topic label. These keyword matches offer a starting point for exploring Knowledge and Reason; they do not by themselves establish a shared argument or a historical connection between the authors.

The authors represented include Bertrand Russell, Immanuel Kant, Richard Feynman, Albert Camus, and others. Read each quotation in its own context rather than assuming that these authors share a position.

One matching quotation reads: "Is there any knowledge in the world which is so certain that no reasonable man could doubt it?" The full quotation and any available source details appear below.

Another matching quotation reads: "Mathematics, from the earliest times to which the history of human reason can reach, has followed, among that wonderful people of the Greek…" Compare the wording and source context to decide how each passage relates to your question.

Use the quotation links to explore individual entries and the author links to visit their profiles on QuoteLineage. For broader reading beyond these keyword matches, explore all Knowledge quotes or the concept page for Reason.

30 Quotes on Knowledge and Reason

"Is there any knowledge in the world which is so certain that no reasonable man could doubt it?"

— Bertrand Russell

"Mathematics, from the earliest times to which the history of human reason can reach, has followed, among that wonderful people of the Greeks, the safe way of science. But it must not be supposed that it was as easy for mathematics as for logic, in which reason is concerned with itself alone, to find, or rather to make for itself that royal road. I believe, on the contrary, that there was a long period of tentative work , and that the change is to be ascribed to a revolution, produced by the happy thought of a single man, whose experiments pointed unmistakably to the path that had to be followed, and opened and traced out for the most distant times the safe way of a science. The history of that intellectual revolution, which was far more important than the passage round the celebrated Cape of Good Hope, and the name of its fortunate author, have not been preserved to us. ... A new light flashed on the first man who demonstrated the properties of the isosceles triangle , for he found that he had not to investigate what he saw hi the figure, or the mere concepts of that figure, and thus to learn its properties; but that he had to produce what he had himself, according to concepts a priori, placed into that figure and represented in it, so that, in order to know anything with certainty a priori, he must not attribute to that figure anything beyond what necessarily follows from what he has himself placed into it, in accordance with the concept."

— Immanuel Kant

"The remark which I read somewhere, that science is all right as long as it doesn't attack religion, was the clue I needed to understand the problem. As long as it doesn't attack religion it need not be paid attention to and nobody has to learn anything. So it can be cut off from society except for its applications, and thus be isolated. And then we have this terrible struggle to try to explain things to people who have no reason to want to know. But if they want to defend their own point of view, they will have to learn what yours is a little bit. So I suggest, maybe correctly and perhaps wrongly, that we are too polite."

— Richard Feynman

"I don't know whether this world has a meaning that transcends it. But I know that I cannot know that meaning and that it is impossible for me just now to know it. What can a meaning outside my condition mean to me? I can understand only in human terms. What I touch, what resists me — that I understand. And these two certainties — my appetite for the absolute and for unity and the impossibility of reducing this world to a rational and reasonable principle — I also know that I cannot reconcile them. What other truth can I admit without lying, without bringing in a hope I lack and which means nothing within the limits of my conditions?"

— Albert Camus

"Nature does nothing in vain, and in the use of means to her goals she is not prodigal. Her giving to man reason and the freedom of the will which depends upon it is clear indication of her purpose. Man accordingly was not to be guided by instinct, not nurtured and instructed with ready-made knowledge; rather, he should bring forth everything out of his own resources."

— Immanuel Kant

"I believe in intuition and inspiration. ... At times I feel certain I am right while not knowing the reason. When the eclipse of 1919 confirmed my intuition, I was not in the least surprised. In fact I would have been astonished had it turned out otherwise. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research."

— Albert Einstein

"Knowledge of the fact differs from knowledge of the reason for the fact."

"If proposal means that we should come to an understanding with Germany to dominate Europe I think this would be contrary to the whole of our history. You know the old fable of the jackal who went hunting with the tiger and what happened after the hunt was over. Thus Elizabeth resisted Philip II of Spain. Thus William III and Marlborough resisted Louis XIV. Thus Pitt resisted Napoleon, and thus we all resisted William II of Germany. Only by taking this path and effort have we preserved ourselves and our liberties, and reached our present position. I see no reason myself to change from this traditional view."

— Winston Churchill

"We are unknown to ourselves, we men of knowledge-and with good reason. We have never sought ourselves- how could it happen that we should ever find ourselves?"

— Friedrich Nietzsche

"All our progress is an unfolding, like the vegetable bud. You have first an instinct, then an opinion, then a knowledge, as the plant has root, bud, and fruit. Trust the instinct to the end, though you can render no reason. It is vain to hurry it. By trusting it to the end it shall ripen into truth, and you shall know why you believe."

— Ralph Waldo Emerson

"It is a mystery that is hidden from me by reason that the emergency requiring the fathoming of it hath not in my life-days occurred, and so, not having no need to know this thing, I abide barren of the knowledge."

"Human reason has this peculiar fate that in one species of its knowledge it is burdened by questions which, as prescribed by the very nature of reason itself, it is not able to ignore, but which, as transcending all its powers, it is also not able to answer."

— Immanuel Kant

"This is the reason why all attempts to obtain a deeper knowledge of the foundations of physics seem doomed to me unless the basic concepts are in accordance with general relativity from the beginning. This situation makes it difficult to use our empirical knowledge, however comprehensive, in looking for the fundamental concepts and relations of physics, and it forces us to apply free speculation to a much greater extent than is presently assumed by most physicists."

— Albert Einstein

"For lack of empirical data I have neither knowledge nor understanding of such forms of being, which are commonly called spiritual. ...Nevertheless, we have good reason to suppose that behind this veil there exists the uncomprehended absolute object which affects and influences us—and to suppose it even, or particularly, in the case of psychic phenomena about which no verifiable statements can be made."

"And this, Cebes, is the reason why the true lovers of knowledge are temperate and brave; and not for the reason that the world gives. For not in that way does the soul of a philosopher reason. ...Never fear, Simmias and Cebes, that a soul which has been thus nurtured and has had these pursuits, will at her departure from the body be scattered and blown away by the winds and be nowhere and nothing."

"The universities are schools of education, and schools of research. But the primary reason for their existence is not to be found either in the mere knowledge conveyed to the students or in the mere opportunities for research afforded to the members of the faculty. Both these functions could be performed at a cheaper rate, apart from these very expensive institutions. Books are cheap, and the system of apprenticeship is well understood. So far as the mere imparting of information is concerned, no university has had any justification for existence since the popularization of printing in the fifteenth century. Yet the chief impetus to the foundation of universities came after that date, and in more recent times has even increased. The justification for a university is that it preserves the connection between knowledge and the zest of life, by uniting the young and the old in the imaginative consideration of learning."

— Alfred North Whitehead

"Desire, to know why, and how, CURIOSITY; such as is in no living creature but Man; so that Man is distinguished, not only by his Reason; but also by this singular Passion from other Animals; in whom the appetite of food, and other pleasures of Sense, by predominance, take away the care of knowing causes; which is a Lust of the mind, that by a perseverance of delight in the continual and indefatigable generation of Knowledge, exceedeth the short vehemence of any carnal Pleasure."

— Thomas Hobbes

"As men, we have God for our King, and are under the law of reason: as Christians, we have Jesus the Messiah for our King, and are under the law revealed by him in the gospel. And though every Christian, both as a deist and a Christian, be obliged to study both the law of nature and the revealed law, that in them he may know the will of God, and of Jesus Christ, whom he hath sent; yet, in neither of these laws, is there to be found a select set of fundamentals, distinct from the rest, which are to make him a deist, or a Christian. But he that believes one eternal, invisible God, his Lord and King, ceases thereby to be an atheist; and he that believes Jesus to be the Messiah, his king, ordained by God, thereby becomes a Christian, is delivered from the power of darkness, and is translated into the kingdom of the Son of God; is actually within the covenant of grace, and has that faith, which shall be imputed to him for righteousness; and, if he continues in his allegiance to this his King, shall receive the reward: eternal life."

"Though experience be our only guide in reasoning concerning matters of fact; it must be acknowledged, that this guide is not altogether infallible, but in some cases is apt to lead us into errors."

"I do not think it possible to get anywhere if we start from scepticism. We must start from a broad acceptance of whatever seems to be knowledge and is not rejected for some specific reason."

— Bertrand Russell

"I will now confess my own utopia. I devoutly believe in the reign of peace and in the gradual advent of some sort of socialistic equilibrium. The fatalistic view of the war function is to me nonsense, for I know that war-making is due to definite motives and subject to prudential checks and reasonable criticisms, just like any other form of enterprise. And when whole nations are the armies, and the science of destruction vies in intellectual refinement with the science of production, I see that war becomes absurd and impossible from its own monstrosity. Extravagant ambitions will have to be replaced by reasonable claims, and nations must make common cause against them."

— William James

"For I find that even those that have sought knowledge for itself and not for benefit, or ostentation, or any practical enablement in the course of their life, have nevertheless propounded to themselves a wrong mark, namely, satisfaction, which men call truth, and not operation. For as in the courts and services of princes and states, it is a much easier matter to give satisfaction than to do the business; so in the inquiring of causes and reasons it is much easier to find out such causes as will satisfy the mind of man, and quiet objections, than such causes as will direct him and give him light to new experiences and inventions."

— Francis Bacon

"In the beginning of the Jewish war in Nero's reign, the Apostles fled out of Judea with their flocks; some beyond Jordan to Pella and other places, some into Egypt, Syria, Mesopotamia, Asia minor, and elsewhere. Peter and John came into Asia, and Peter went thence by Corinth to Rome; but John staying in Asia, was banished by the Romans into Patmos, as the head of a party of the Jews, whose nation was in war with the Romans. By this dispersion of the Christian Jews, the Christian religion, which was already propagated westward as far as Rome, spread fast into all the Roman Empire, and suffered many persecutions under it till the days of Constantine the great and his sons: all which is thus described by Daniel. And such as do wickedly against the covenant, shall he, who places the abomination, cause to dissemble, and worship the heathen Gods; but the people among them who do know their God, shall be strong and act. And they that understand among the people, shall instruct many: yet they shall fall by the sword, and by flame, and by captivity, and by spoil many days. Now when they shall fall, they shall be holpen with a little help, viz. in the reign of Constantine the great; and at that time by reason of their prosperity, many shall come over to them from among the heathen, and cleave to them with dissimulation. But of those of understanding there shall still fall to try God's people by them and to purge them from the dissemblers, and to make them white even to the time of the end: because it is yet for a time appointed."

— Isaac Newton

"When Galilei let balls of a particular weight, which he had determined himself, roll down an inclined plain, or Torricelli made the air carry a weight, which he had previously determined to be equal to that of a definite volume of water; or when, in later times, Stahl changed metal into lime, and lime again into metals, by withdrawing and restoring something, a new light flashed on all students of nature. They comprehended that reason has insight into that only, which she herself produces on her own plan, and that she must move forward with the principles of her judgments, according to fixed law, and compel nature to answer her questions, but not let herself be led by nature, as it were in leading strings, because otherwise accidental observations made on no previously fixed plan, will never converge towards a necessary law, which is the only thing that reason seeks and requires. Reason, holding in one hand its principles, according to which concordant phenomena alone can be admitted as laws of nature, and in the other hand the experiment, which it has devised according to those principles, must approach nature, in order to be taught by it: but not in the character of a pupil, who agrees to everything the master likes, but as an appointed judge, who compels the witnesses to answer the questions which he himself proposes. Therefore even the science of physics entirely owes the beneficial revolution in its character to the happy thought, that we ought to seek in nature whatever reason must learn from nature, and could not know by itself, and that we must do this in accordance with what reason itself has originally placed into nature. Thus only has the study of nature entered on the secure method of a science, after having for many centuries done nothing but grope in the dark."

— Immanuel Kant

"I make this chief distinction between religion and superstition, that the latter is founded on ignorance, the former on knowledge; this, I take it, is the reason why Christians are distinguished from the rest of the world, not by faith, nor by charity, nor by the other fruits of the Holy Spirit, but solely by their opinions, inasmuch as they defend their cause, like everyone else, by miracles, that is by ignorance, which is the source of all malice; thus they turn a faith, which may be true, into superstition."

— Baruch Spinoza

"Man may be excused for feeling some pride at having risen, though not through his own exertions, to the very summit of the organic scale; and the fact of his having thus risen, instead of having been aboriginally placed there, may give him hopes for a still higher destiny in the distant future. But we are not here concerned with hopes or fears, only with the truth as far as our reason allows us to discover it. I have given the evidence to the best of my ability; and we must acknowledge, as it seems to me, that man with all his noble qualities, with sympathy which feels for the most debased, with benevolence which extends not only to other men but to the humblest living creature, with his god-like intellect which has penetrated into the movements and constitution of the solar system — with all these exalted powers — Man still bears in his bodily frame the indelible stamp of his lowly origin."

— Charles Darwin

"I doubt not but one great reason why many children abandon themselves wholly to silly sports, and trifle away all their time insipidly, is, because they have found their curiosity baulk'd, and their inquiries neglected. But had they been treated with more kindness and respect, and their questions answered, as they shuold, to their satisfaction; I doubt not but that they would have taken more pleasure in learning, and improving their knowledge, wherein there would still be newness and variety, which is what they are delighted with, than in returning over and over to the same play and play-things."

"Every one is familiar with the phenomenon of feeling more or less alive on different days. Every one knows on any given day that there are energies slumbering in him which the incitements of that day do not call forth, but which he might display if these were greater. Most of us feel as if we lived habitually with a sort of cloud weighing on us, below our highest notch of clearness in discernment, sureness in reasoning, or firmness in deciding. Compared with what we ought to be, we are only half-awake. Our fires are damped, our drafts are checked. We are making use of only a small part of our possible mental and physical resources."

— William James

"I do not see any reason to assume that the heuristic significance of the principle of general relativity is restricted to gravitation and that the rest of physics can be dealt with separately on the basis of special relativity, with the hope that later on the whole may be fitted consistently into a general relativistic scheme. I do not think that such an attitude, although historically understandable, can be objectively justified. The comparative smallness of what we know today as gravitational effects is not a conclusive reason for ignoring the principle of general relativity in theoretical investigations of a fundamental character. In other words, I do not believe that it is justifiable to ask: What would physics look like without gravitation?"

— Albert Einstein

"The less somebody knows and understand himself the less great he is, however great may be his talent. For this reason our scientists are not great."

— Ludwig Wittgenstein

Key thinkers on this theme

Bertrand Russell· Philosophy Immanuel Kant· Philosophy Richard Feynman· Science Albert Camus· Literature Albert Einstein· Science

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