The world will not evolve past its current state of crisis by using the same thinking that created the situation.

Berlin is the place to which I am most closely bound by human and scientific ties.

I recently discussed with an intelligent and well-disposed man the threat of another war, which in my opinion would seriously endanger the existence of mankind, and I remarked that only a supranational organization would offer protection from that danger. Thereupon my visitor, very calmly and coolly, said to me: "Why are you so deeply opposed to the disappearance of the human race?".

The religion of the future will be cosmic religion. It will transcend personal God and avoid dogma and theology.

There comes a point in your life when you need to stop reading other people's books and write your own.

Don't dream of being a good person, be a human being is valuable and gives value to life.

Time is not at all what it seems. It does not flow in only one direction, and the future exists simultaneously with the past.