Most pioneers are at the mercy of doubt at the beginning, whether of their worth, of their theories, or of the whole enigmatic field in which they labour.
Dream no small dreams for they have no power to move the hearts of men.
On every mountain height is rest.
The senses do not deceive us, but the judgment does.
Enjoy when you can, and endure when you must.
Happiness is a ball after which we run wherever it rolls, and we push it with our feet when it stops.