Grow into your ideals so that life cannot rob you of them.
The highest knowledge is to know that we are surrounded by mystery.
Reverence for life is the highest court of appeal.
The first step in the evolution of ethics is a sense of solidarity with other human beings.
The future of civilization depends on our overcoming the meaninglessness and hopelessness which characterize the thoughts and convictions of men today, and reaching a state of fresh hope and fresh determination.
Man can hardly even recognize the devils of his own creation.