In the search for truth - that everything in nature seems to hide - man needs the assistance of all his faculties. All the senses should be awake.

When a man really believes that it is necessary to do a certain thing to be happy forever, or that a certain belief is necessary to ensure eternal joy, there is in that man no spirit of concession. He divides the whole world into saints and sinners, into believers and unbelievers, into God's sheep and Devil's goats, into people who will be glorified and people who are damned.

I thank thee, Mother Nature, that thou hast put ingenuity enough in the brain of a child, when attacked by a brutal parent, to throw up a little breastwork in the shape of a lie.

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

By physical liberty I mean the right to do anything which does not interfere with the happiness of another. By intellectual liberty I mean the right to think and the right to think wrong.

The hands that help are better far / Than lips that pray. / Love is the ever gleaming star / That leads the way, / That shines, not on vague worlds of bliss, / But on a paradise in this.

In the night of death, hope sees a star, and listening love can hear the rustle of a wing.