"Possessions, outward success, publicity, luxury - to me these have always been contemptible. I believe that a simple and unassuming manner of life is best for everyone, best for both the body and the mind."
"Science without religion is lame, religion without science is blind."
"The significant problems we have cannot be solved at the same level of thinking with which we created them."
"A man's ethical behaviour should be based effectually on sympathy, education, and social ties and needs; no religious basis is necessary. Man would indeed be in a poor way if he had to be restrained by fear of punishment and hope of reward after death."
"Science without religion is lame, religion without science is blind."
"Wisdom is not a product of schooling but of the lifelong attempt to acquire it."