Try to learn something about everything and everything about something.
It is not who is right, but what is right, that is of importance.
Perhaps the most valuable result of all education is the ability to make yourself do the thing you have to do, when it ought to be done, whether you like it or not. It is the first lesson that ought to be learned and however early a man's training begins, it is probably the last lesson that he learns thoroughly.
Learn what is true in order to do what is right.
The secret of genius is to carry the spirit of childhood into maturity.
Skepticism is the highest duty and blind faith the one unpardonable sin.
The rung of a ladder was never meant to rest upon.
I'd rather have an ape for an ancestor than a bishop.
It is far better for a man to go wrong in freedom than to go right in chains.
Of the few innocent pleasures left to men past middle life, the jamming of common sense down the throats of fools is perhaps the keenest.
We live in a world which is full of misery and ignorance, and the plain duty of each and all of us is to try to make the little corner he can influence somewhat less miserable and somewhat less ignorant than it was before he entered.
The chess-board is the world, the pieces are the phenomena of the universe, the rules of the game are what we call the laws of Nature. The player on the other side is hidden from us.
Science commits suicide when it adopts a creed.
We are prone to see what lies behind our eyes, rather than what apprears before them.
The great tragedy of science - the slaying of a beautiful hypothesis by an ugly fact.
A man who speaks out honestly and fearlessly that which he knows, and that which he believes, will always enlist the good will and the respect, however much he may fail in winning the assent, of his fellow men.
The great end of life is not knowledge but action.
The foundation of all morality is to have done, once and for all, with lying; to give up pretending to believe that for which there is no evidence, and repeating unintelligible propositions about things beyond the possibilities of knowledge.
The birth of science was the death of superstition.
God give me strength to face a fact though it slay me.
The only people, scientific or other, who never make mistakes are those who do nothing.
The doctrine that all men are, in any sense, or have been, at any time, free and equal, is an utterly baseless fiction.
Science is simply common sense at its best, that is, rigidly accurate in observation, and merciless to fallacy in logic.
A well-worn adage advises those who set out upon a great enterprise to count the cost, yet some of the greatest enterprises have succeeded because the people who undertook them did not count the cost.
Science and literature are not two things, but two sides of one thing.
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