The deepest problems of modern life derive from the claim of the individual to preserve the autonomy and individuality of his existence in the face of overwhelming social forces, of historical heritage, of external culture, and of the technique of life.

The world is full of obvious things which nobody by any chance ever observes.

If you're not failing occasionally, you're not pushing hard enough.

除非定理是美丽的，否则它们毫无价值。

"The best investment you can make is in yourself."