"As far as the laws of mathematics refer to reality, they are not certain, and as far as they are certain, they do not refer to reality."
"Before God we are all equally wise—and equally foolish."
"Common sense is the collection of prejudices acquired by age eighteen."
"Great spirits have always encountered violent opposition from mediocre minds."
"Imagination is more important than knowledge."
"It has become appallingly obvious that our technology has exceeded our humanity."
"Put your hand on a hot stove for a minute, and it seems like an hour. Sit with a pretty girl for an hour, and it seems like a minute. That's relativity."
"The most beautiful thing we can experience is the mysterious. It is the source of all true art and science."
"The most incomprehensible thing about the world is that it is comprehensible."
"We should take care not to make the intellect our god; it has, of course, powerful muscles, but no personality."