In the same way as the tree bears the same fruit year after year, but each time new fruit, all lastingly valuable ideas in thinking must always be reborn.

Ethics, too, are nothing but reverence for life. This is what gives me the fundamental principle of morality, namely, that good consists in maintaining, promoting, and enhancing life, and that destroying, injuring, and limiting life are evil.

For those who sincerely seek the truth should not fear the outcome.

I see in him (Dr. Max Gerson) one of the most eminent medical geniuses in the history of medicine...he was greatly impeded by adverse political conditions.

Example is not the main thing in influencing others. It is the only thing.

Not one of us knows what effect his life produces, and what he gives to others; that is hidden from us and must remain so, though we are often allowed to see some little fraction of it, so that we may not lose courage.

The highest knowledge is to know that we are surrounded by mystery.