All that I say is, examine, inquire. Look into the nature of things. Search out the grounds of your opinions, the for and against. Know why you believe, understand what you believe, and possess a reason for the faith that is in you.

It is singular to look round upon a country where the dreams of sages, smiled at as utopian, seem distinctly realized, a people voluntarily submitting to laws of their own imposing, with arms in their hands respecting the voice of a government which their breath created and which their breath could in a moment destroy!

It is in vain that we would circumscribe the power of one half of our race, and that half by far the most important and influential. If they exert it not for good, they will for evil; if they advance not knowledge, they will perpetuate ignorance. Let women stand where they may in the scale of improvement, their position decides that of the race.

The best road to correct reasoning is by physical science; the way to trace effects to causes is through physical science; the only corrective, therefore, of superstition is physical science.

Truth is but approved facts.

Moral truth, resting entirely upon the ascertained consequences of actions, supposes a process of observation and reasoning.

We have ... dreamed so much and observed so little, that our imaginations have grown larger than the world we live in, and our judgments have dwindled down to a point.