Science is simply common sense at its best, that is, rigidly accurate in observation, and merciless to fallacy in logic.

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.

No slavery can be abolished without a double emancipation, and the master will benefit by freedom more than the freed-man.

The antagonism between science and religion, about which we hear so much, appears to me to be purely factitiousfabricated, on the one hand, by short-sighted religious people who confound a certain branch of science, theology, with religion; and, on the other, by equally short-sighted scientific people who forget that science takes for its province only that which is susceptible of clear intellectual comprehension; and that, outside the boundaries of that province, they must be content with imagination, with hope, and with ignorance

Teach a child what is wise, that is morality. Teach him what is wise and beautiful, that is religion!

Make up your mind to act decidedly and take the consequences. No good is ever done in this world by hesitation.

Deduction, which takes us from the general proposition to facts again-teaches us, if I may so say, to anticipate from the ticket what is inside the bundle.