I have tried 99 times and have failed, but on the 100th time came success.

As our circle of knowledge expands, so does the circumference of darkness surrounding it.

All my life I have dealt with objective matters; hence I lack both the natural aptitude and the experience to deal properly with people and to carry out official functions.

A human being is part of a whole called by us the universe.

How I wish that somewhere there existed an island for those who are wise and of good will.

What I see in Nature is a magnificent structure that we can comprehend only very imperfectly, and that must fill a thinking person with a feeling of humility. This is a genuinely religious feeling that has nothing to do with mysticism.

If you want your children to be intelligent, read them fairy tales. If you want them to be more intelligent, read them more fairy tales.