Success comes from curiosity, concentration, perseverance and self criticism.

The only race I know is the human one.

The content of scientific theory itself offers no moral foundation for the personal conduct of life.

Humiliation and mental oppression by ignorant and selfish teachers wreak havoc in the youthful mind that can never be undone and often exert a baleful influence in later life.

The music of Mozart is of such purity and beauty that one feels he merely found it - that it has always existed as part of the inner beauty of the universe waiting to be revealed.

I hate all the loathsome nonsense that goes with patriotism.

When you sit with a nice girl for two hours, it seems like two minutes; when you sit on a hot stove for two minutes, it seems like two hours. That's relativity.