Ignorance worships mystery; reason explains it; the one grovels, the other soars.

Reason is the light, the sun of the brain. It is the compass of the mind, the ever-constant Northern Star, the mountain peak that lifts itself above all clouds.

As a man develops, he places a greater value upon his own rights. Liberty becomes a grander and diviner thing. As he values his own rights he begins to value the rights of others. And when all men give to all others all the rights they claim for themselves, this world will be civilized.

A miracle is the badge and brand of fraud. ... No intelligent, honest man ever pretended to perform a miracle, and never will.

Let us agree not to step on each other’s feet.

It is a thousand times better to have common sense without education than to have education without common sense.

You cannot be so poor that you cannot help somebody.