And step by step, along the path of life, There's nothing true but Heaven.

To know of someone here and there whom we accord with, who is living on with us, even in silence - - this makes our earthly ball a peopled garden.

This is what they all come to who exclusively harp on experience. They do not stop to consider that experience is only one half of experience.

Men are joined by conviction, sundered by opinion.

A mathematician is only perfect insofar as he is a perfect man, sensitive to the beauty of truth.

Nothing is worth more than this day. You cannot relive yesterday. Tomorrow is still beyond your reach.

Gray are all the theories, But green is the tree of life.