If I had 20 days to solve a problem, I would take 19 days to define it

The economic anarchy of capitalist society as it exists today is, in my opinion, the real source of evil.

If my theory of relativity is proven successful, Germany will claim me as a German and France will declare me a citizen of the world. Should my theory prove untrue, France will say that I am a German, and Germany will declare that I am a Jew.

In scientific thinking are always present elements of poetry. Science and music requires a thought homogeneous.

In conclusion I wish to say that in working at the problem here dealt with I have had the loyal assistance of my friend and colleague M. Besso, and that I am indebted to him for several valuable suggestions.

Why is it I always get my best ideas while shaving?

The most beautiful thing we can experience is the mysterious. It is the source of all true art and science.