Hatred is a feeling which leads to the extinction of values.

Our firmest convictions are apt to be the most suspect; they mark our limitations and our bounds. Life is a petty thing unless it is moved by the indomitable urge to extend its boundaries.

Man is a fugitive from nature.

Human vitality is so exuberant that in the sorriest desert it still finds a pretext for glowing and trembling.

An idea is a putting truth in check-mate.

The form most contradictory to human life that can appear among the human species is the "self-satisfied man."

The hunter who accepts the sporting code of ethics keeps his commandments in the greatest solitude, with no witness or audience other than the sharp peaks of the mountain, the roaming cloud, the stern oak, the trembling juniper, and the passing animal.