It is not what we believe, but why we believe it. Moral responsibility lies in diligently weighing the evidence. We must actively doubt; we have to scrutinize our views, not take them on trust. No virtue attached to blindly accepting orthodoxy, however 'venerable'.
Teach a child what is wise, that is morality. Teach him what is wise and beautiful, that is religion!
Agnosticism, in fact, is not a creed, but a method, the essence of which lies in the rigorous application of a single principle. ... Positively the principle may be expressed: In matters of the intellect, follow your reason as far as it will take you, without regard to any other consideration. And negatively: In matters of the intellect, do not pretend that conclusions are certain which are not demonstrated or demonstrable.
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 birth of science was the death of superstition.
I can assure you that there is the greatest practical benefit in making a few failures early in life. You learn that which is of inestimable importance that there are a great many people in the world who are just as clever as you are. You learn to put your trust, by and by, in an economy and frugality of the exercise of your powers, both moral and intellectual; and you very soon find out, if you have not found it out before, that patience and tenacity of purpose are worth more than twice their weight of cleverness.
Science is simply common sense at its best.
Logical consequences are the scarecrows of fools and the beacons of wise men.
. . . I fail to find a trace [in Protestantism] of any desire to set reason free. The most that can be discovered is a proposal to change masters. From being a slave of the papacy, the intellect was to become the serf of the Bible.
The Bible account of the creation of Eve is a preposterous fable.
There is assuredly no more effectual method of clearing up one's own mind on any subject than by talking it over, so to speak, with men of real power and grasp, who have considered it from a totally different point of view.
Science is simply common sense at its best, that is, rigidly accurate in observation, and merciless to fallacy in logic.
All truth, in the long run, is only common sense clarified.
If there is anything in the world which I do firmly believe in, it is the universal validity of the law of causation.
In matters of intellect, follow your reason as far as it will take you, without regard for any other consideration.
A world of facts lies outside and beyond the world of words.
The thief and the murderer follow nature just as much as the philanthropist.
The doctrine that all men are, in any sense, or have been, at any time, free and equal, is an utterly baseless fiction.
I protest that if some great Power would agree to make me always think what is true and do what is right, on condition of being turned into a sort of clock and would up every morning before I got out of bed, I should instantly close with the offer.
Sit down before fact as a little child, be prepared to give up every conceived notion, follow humbly wherever and whatever abysses nature leads, or you will learn nothing.
History warns us that it is the customary fate of new truths to begin as heresies and to end as superstitions.
In scientific work, those who refuse to go beyond fact rarely get as far as fact.
Science and literature are not two things, but two sides of one thing.
Teach a man to read and write, and you have put into his hands the great keys of the wisdom-box.
All knowledge is good. It is impossible to say any fragment of knowledge, however insignificant or remote from one's ordinary pursuits, may not some day be turned to account.
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