“For a successful technology, reality must take precedence over public relations, for nature cannot be fooled.”

“Tell your son to stop trying to fill your head with science — for to fill your heart with love is enough!”

“I don't know anything, but I do know that everything is interesting if you go into it deeply enough.”

“You can recognize truth by its beauty and simplicity.”

“I learned very early the difference between knowing the name of something and knowing something.”

“What I cannot create, I do not understand.”

“There is a higher court than courts of justice and that is the court of conscience. It supersedes all other courts.”

“Nonviolence is the first article of my faith. It is also the last article of my creed.”

“There are many causes that I am prepared to die for but no causes that I am prepared to kill for.”

“For the world is in a bad state, but everything will become still worse unless each of us does his best. So, let us be alert — alert in a twofold sense: Since Auschwitz we know what man is capable of. And since Hiroshima we know what is at stake.”

“If there is a meaning in life at all, then there must be a meaning in suffering. Suffering is an ineradicable part of life, even as fate and death.”

“Ultimately, man should not ask what the meaning of his life is, but rather must recognize that it is he who is asked. In a word, each man is questioned by life; and he can only answer to life by answering for his own life; to life he can only respond by being responsible.”