A man sees in the world what he carries in his heart.

No two people see the world exactly alike, and different temperaments will often apply the same principle, recognized by both, differently. Even one and the same person won't always maintain the same views and judgments: earlier convictions must give way to later ones.

To act is easy, to think is hard; to act according to our thought is troublesome.

If a man knows where to get good advice, it is as though he could supply it himself.

The man of understanding finds everything laughable.

Let mental culture go on advancing, let the natural sciences progress in even greater extent and depth, and the human mind widen itself as much as it desires: beyond the elevation and moral culture of Christianity, as it shines forth in the Gospels, it will not go.

The safest thing is always to try to convert everything that is in us and around us into action; let the others talk and argue about it as they please.