Not the maker of plans and promises, but rather the one who offers faithful service in small matters. This is the person who is most likely to achieve what is good and lasting.

Insofar as he makes use of his healthy senses, man himself is the best and most exact scientific instrument possible. The greatest misfortune of modern physics is that its experiments have been set apart from man, as it were, physics refuses to recognize nature in anything not shown by artificial instruments, and even uses this as a measure of its accomplishments.

Nature is the living, visible garment of God.

Animals, we have been told, are taught by their organs. Yes, I would add, and so are men, but men have this further advantage that they can also teach their organs in return.

He alone deserves liberty and life who daily must win them anew.

The traveler was active; he went strenuously in search of people, of adventure, of experience. The tourist is passive.

I will be lord over myself.