Aristotle on Life

"That judges of important causes should hold office for life is a disputable thing, for the mind grows old as well as the body."

"朴素使未受教育的人在面对大众演讲时比受过教育的人更有成效。It is simplicity that makes the uneducated more effective than the educated when addressing popular audiences."

"For the things we have to learn before we can do them, we learn by doing them."

"To the query, "What is a friend?" his reply was "A single soul dwelling in two bodies."

"If, then, God is always in that good state in which we sometimes are, this compels our wonder; and if in a better this compels it yet more. And God is in a better state. And life also belongs to God;"

"Let us then enunciate the functions of a state and we shall easily elicit what we want: First there must be food; secondly, arts, for life requires many instruments; thirdly, there must be arms, for the"

"If ... we state the function of man to be a certain kind of life, and this to be an activity or actions of the soul implying a rational principle, and the function of a good man to be the good and noble"

"The bodies of which the world is composed are solids, and therefore have three dimensions. Now, three is the most perfect number,—it is the first of numbers, for of one we do not speak as a number, of two we say both, but three is the first number of which we say all. Moreover, it has a beginning, a middle, and an end."

"Sound is the motion of that which is able to be moved, after the manner in which those things are moved, that rebound from smooth bodies, when any one strikes them. Not every thing... sounds... but it is necessary, that the body which is struck should be equable, that the air may collectively rebound, and be shaken. The differences, however, of bodies which sound, are manifested in the sound, which is in energy; for, as colours are not perceived without light, so neither are the sharp and the flat perceived without sound. But these things are asserted metaphorically, from those which pertain to the touch; for the sharp moves the sense much in a short time, but the flat a little in a long time. The sharp, therefore, is not rapid, and the flat slow; but such a motion is produced of the one, on account of celerity, and of the other on account of slowness, that, also, which is perceived in the touch, appears to be analogous to the acute and obtuse, for the acute, as it were, stings; but the obtuse, as it were, impels: because the one moves in a short, but the other in a long time. Hence it happens that the one is swift but the other slow. Let it therefore be thus determined concerning sound."