“The man has the possibilities of getting free gradually from the mechanical laws.”

In order to understand the interrelation of truth and falsehood in life, a man must understand falsehood in himself, the constant incessant lies he tells himself.

Those who have not sown anything during their responsible life will have nothing to reap in the future.

Man has the possibility of existence after death. But possibility is one thing and the realization of the possibility is quite a different thing.

What you need to know is very little, but to know that little takes very very much.

If a sufficient number of people who wanted to stop war really did gather together, they would first of all begin by making war upon those who disagreed with them. And it is still more certain that they would make war on people who also want to stop wars but in another way.

If you meditate and the Devil comes, make the Devil meditate.

If you can serve a cup of tea right, you can do anything.

In properly organized groups no faith is required; what is required is simply a little trust and even that only for a little while, for the sooner a man begins to verify all he hears the better it is for him.

It is the same with everything else, with food, with pleasures, with sleep; with everything there is a limit to what is necessary. After this “sin” begins. This is something that must be grasped, a “sin” is something which is not necessary.

Never think of results, just do!

The degree of consciousness corresponds to the degree of density or the speed of vibrations. The denser the matter, the less conscious it is.

The highest that a man can attain is to be able to do.

Practice love on animals first; they react better and more sensitively.

Personality in man is what is “not his own” . . . what come from outside, what he has learned, or reflects, all traces of exterior impressions left in the memory.

Would a CONSCIOUS human being destroy himself through war, and crime, and quarrels? No, a man simply knows not what he does to himself.

Man must use what he has, not hope for what is not.

In America, the professor talks to the mechanic. They are in the same category.

In 1924, I became a Dozent in Gottingen and worked out the quantum mechanics during a holiday stay on Heligoland.

I was 17 and just learning what high fidelity was, what good sound was, and learning the mechanics of tape machines.

This is the reason why quantum mechanics seems so foreign to our everyday existence.

Certainly we do not need quantum mechanics for macroscopic objects, which are well described by classical physics.

The development of quantum mechanics early in the twentieth century obliged physicists to change radically the concepts they used to describe the world.

The true secret to genius is in creativity, not in technical mechanics.

[Heisenberg’s seminal 1925 paper initiating quantum mechanics marked] one of the great jumps-perhaps the greatest-in the development of twentieth century physics.