The highest wisdom has but one science-the science of the whole-the science explaining the whole creation and man's place in it.

Every man had his personal habits, passions, and impulses toward goodness, beauty, and truth.

Better to know a few things which are good and necessary than many things which are useless and mediocre

The teaching of the church, theoretically astute, is a lie in practice and a compound of vulgar superstitions and sorcery.

Man must not check his reason by tradition, but, contrariwise, must check tradition by reason.

The only purpose of education is freedom; the only method is experience.

She was in that highly-wrought state when the reasoning powers act with great rapidity: the state a man is in before a battle or a struggle, in danger, and at the decisive moments of life - those moments when a man shows once and for all what he is worth, that his past was not lived in vain but was a preparation for these moments.