The rung of a ladder was never meant to rest upon.
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.
It is not who is right, but what is right, that is of importance.
Try to learn something about everything and everything about something.
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.
Learn what is true in order to do what is right.
Make up your mind to act decidedly and take the consequences. No good is ever done in this world by hesitation.
I care not what subject is taught, if only it be taught well.
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.
The great tragedy of science - the slaying of a beautiful hypothesis by an ugly fact.
Every great advance in natural knowledge has involved the absolute rejection of authority.
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.
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.
Science commits suicide when it adopts a creed.
We are prone to see what lies behind our eyes, rather than what apprears before them.
It is the first duty of a hypothesis to be intelligible.
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.
Follow humbly wherever and to whatever abyss Nature leads, or you shall learn nothing.
The only people, scientific or other, who never make mistakes are those who do nothing.
The known is finite, the unknown infinite; intellectually we stand on an islet in the midst of an illimitable ocean of inexplicability. Our business in every generation is to reclaim a little more land, to add something to the extent and the solidity of our possessions.
Science seems to me to teach in the highest and strongest manner the great truth which is embodied in the Christian conception of entire surrender to the will of God. Sit down before fact as a little child, be prepared to give up every preconceived notion, follow humbly wherever and to whatever abysses nature leads, or you shall learn nothing. I have only begun to learn content and peace of mind since I have resolved at all risks to do this.
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.
There is but one right, and the possibilities of wrong are infinite.
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