You must be aware that most men (and also not only a few women) are by nature not monogamous. This nature makes itself even more forceful when tradition and circumstance stand in an individual's way.

Each makes this cosmos and its construction the pivot of his emotional life, in order to find in this way peace and security which he can not find in the narrow whirlpool of personal experience.

I no longer believed in the known God of the Bible, but rather in the mysterious God expressed in nature.

Most people see what is, and never see what can be.

The first and most important necessity is the creation of a modus vivendi with the Arab people.

I do not believe that a moral philosophy can ever be founded on a scientific basis. … The valuation of life and all its nobler expressions can only come out of the soul’s yearning toward its own destiny. Every attempt to reduce ethics to scientific formulas must fail. Of that I am perfectly convinced.

You ask me if I keep a notebook to record my great ideas. I've only ever had one.