“My experience of the world is that things left to themselves don't get right.”
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My business is to teach my aspirations to confirm themselves to fact, not to try and make facts harmonize with my aspirations.
The struggle for existence holds as much in the intellectual as in the physical world. A theory is a species of thinking, and its right to exist is coextensive with its power of resisting extinction by its rivals.
If a little knowledge is dangerous, where is the man who has so much as to be out of danger?
Science has fulfilled her function when she has ascertained and enunciated truth.