The language of the heart--the language which "comes from the heart" and "goes to the heart"--is always simple, always graceful, and always full of power, but no art of rhetoric can teach it. It is at once the easiest and most difficult language--difficult, since it needs a heart to speak it; easy, because its periods though rounded and full of harmony, are still unstudied.

The lively and mercurial are as open books, with the leaves turned down at the notable passages. Their souls sit at the windows of their eyes, seeing and to be seen.

Adhesion to one idea is monomania; to few, slavery.

There is a German proverb which says that Take-it-Easy and Live-Long are brothers.

Intellectually, as politically, the direction of all true progress is towards greater freedom, and along an endless succession of ideas.

The heart contracts as the pocket expands.

Can that which is the greatest virtue in philosophy, doubt (called by Galileo the father of invention), be in religion what the priests term it, the greatest of sins?