"Imagination is more important than knowledge."
"Gravitation is not responsible for people falling in love."
"I want to know God's thoughts; the rest are details."
"Reality is merely an illusion, albeit a very persistent one."
"The only real valuable thing is intuition."
"A person starts to live when he can live outside himself."
"Weakness of attitude becomes weakness of character."
"I never think of the future. It comes soon enough."
"Anyone who has never made a mistake has never tried anything new."