Nothing can be more incorrect than the assumption one sometimes meets, with that physics has one method. chemistry another. and biology a third.
Patience and tenacity are worth more than twice their weight of cleverness.
Proclaim human equality as loudly as you like Witless will serve his brother.
Science and literature are not two things but two sides of one thing.
My business is to teach my aspirations to confirm themselves to fact not to try and make facts harmonize with my aspirations.
Science commits suicide when it adopts a creed.
The only freedom I care about is the freedom to do right, the freedom to do wrong I am ready to part with on the cheapest terms to anyone who will take it of me.