"Anyone who takes himself too seriously always runs the risk of looking ridiculous; anyone who can consistently laugh at himself does not."

"Fear is the main source of the atrophy of the will, which is the main characteristic of the modern age."

"The purpose of life is to live it, to taste experience to the utmost, to reach out eagerly and without fear for newer and richer experience."

"History has taught us that we cannot rely on others to do our work for us."

"Even a purely moral act that has no hope of any immediate and visible political effect can gradually and unforeseeably influence the state of affairs."