If I were not a physicist, I would probably be a musician. I often think in music. I live my daydreams in music. I see my life in terms of music.
I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.
The most beautiful experience we can have is the mysterious. It is the fundamental emotion that stands at the cradle of true art and true science.
You never fail until you stop trying.
Great spirits have always encountered violent opposition from mediocre minds.
Gravitation is not responsible for people falling in love.
The measure of intelligence is the ability to change.
It is not that I'm so smart. But I stay with the questions much longer.
Creativity is intelligence having fun.
The world is a dangerous place to live, not because of the people who are evil, but because of the people who don't do anything about it.
If A is a success in life, then A equals x plus y plus z. Work is x; y is play; and z is keeping your mouth shut
Black holes are where God divided by zero.
Everything must be made as simple as possible. But not simpler.
The best way to cheer yourself is to cheer somebody else up.
When you trip over love, it is easy to get up. But when you fall in love, it is impossible to stand again.
What is right is not always popular and what is popular is not always right.
Whoever is careless with the truth in small matters cannot be trusted with important matters
Peace cannot be kept by force; it can only be achieved by understanding.
A question that sometimes drives me hazy: am I or are the others crazy?
In the middle of difficulty lies opportunity
