"A person starts to live when he can live outside himself."
"A human being is a part of a whole, called by us _universe_, a part limited in time and space. He experiences himself, his thoughts and feelings as something separated from the rest... a kind of optical delusion of his consciousness. This delusion is a kind of prison for us, restricting us to our personal desires and to affection for a few persons nearest to us. Our task must be to free ourselves from this prison by widening our circle of compassion to embrace all living creatures and the whole of nature in its beauty."
"Now he has departed from this strange world a little ahead of me. That means nothing. People like us, who believe in physics, know that the distinction between past, present, and future is only a stubbornly persistent illusion."
"Imagination is more important than knowledge."
"We can't solve problems by using the same kind of thinking we used when we created them."
"Education is what remains after one has forgotten everything he learned in school."
"The important thing is not to stop questioning. Curiosity has its own reason for existing."