"The work of science is to substitute facts for appearances, and demonstrations for impressions."

“Suppose any person to be put in possession of a large estate of fruitful land, with rich beds of gold in its gravel; countless herds of cattle in its pastures; houses, and gardens, and storehouses full of useful stores; but suppose, after all, that he could get no servants? In order that he may be able to have servants, some one in his neighbourhood must be poor, and in want of his gold — or his corn. Assume that no one is in want of either, and that no servants are to be had. He must, therefore, bake his own bread, make his own clothes, plough his own ground, and shepherd his own flocks. His gold will be as useful to him as any other yellow pebbles on his estate. His stores must rot, for he cannot consume them. He can eat no more than another man could eat, and wear no more than another man could wear. He must lead a life of severe and common labour to procure even ordinary comforts; he will be ultimately unable to keep either houses in repair, or fields in cultivation; and forced to content himself with a poor man's portion of cottage and garden, in the midst of a desert of waste land, trampled by wild cattle, and encumbered by ruins of palaces, which he will hardly mock at himself by calling "his own.”

“In general, pride is at the bottom of all great mistakes.”

“The world is full of vulgar Purists, who bring discredit on all selection by the silliness of their choice; and this the more, because the very becoming a Purist is commonly indicative of some slight degree of weakness, readiness to be offended, or narrowness of understanding of the ends of things.”

“Labour without joy is base. Labour without sorrow is base. Sorrow without labour is base. Joy without labour is base.”

““I choose my physician and my clergyman, thus indicating my sense of the quality of their work.” By all means, also, choose your bricklayer; that is the proper reward of the good workman, to be “chosen.” The natural and right system respecting all labour is, that it should be paid at a fixed rate, but the good workman employed, and the bad workman unemployed. The false, unnatural, and destructive system is when the bad workman is allowed to offer his work at half-price, and either take the place of the good, or force him by his competition to work for an inadequate sum.”

“It is only the basest writer who cannot speak of the sea without talking of "raging waves," "remorseless floods," "ravenous billows," etc.; and it is one of the signs of the highest power in a writer to check all such habits of thought, and to keep his eyes fixed firmly on the pure fact, out of which if any feeling comes to him or his reader, he knows it must be a true one.”