The only thing that you absolutely have to know, is the location of the library.

Politics is a pendulum whose swings between anarchy and tyranny are fueled by perennially rejuvenated illusions.

One thing I have learned in a long life: that all our science, measured against reality, is primitive and childlike -- and yet it is the most precious thing we have.

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

Games are the most elevated form of investigation.

Only one who devotes himself to a cause with his whole strength and soul can be a true master. For this reason mastery demands all of a person.

The world as we have created it is a process of our thinking. It cannot be changed without changing our thinking.