The best weapon of a dictatorship is secrecy, but the best weapon of a democracy should be the weapon of openness.

Every great and deep difficulty bears in itself its own solution. It forces us to change our thinking in order to find it.

Prediction is very difficult, especially if it's about the future.

Einstein, stop telling God what to do!

Every great and deep difficulty bears in itself its own solution. It forces us to change our thinking in order to find it.