Erwin Schrodinger

Wave mechanics

Modern influential 158 sayings

Sayings by Erwin Schrodinger

The number of degrees of freedom of the cat is enormous. Is it possible that the cat is to be described by a wave function, which is a superposition of a live and a dead cat?

1935 — Letter to Albert Einstein, discussing his thought experiment
Strange & Unusual Unverifiable

If we were to take the wave function to be a complete description of reality, then the living and dead cat would indeed be equally real.

1935 — Letter to Albert Einstein, discussing his thought experiment
Strange & Unusual Unverifiable

What we observe as material bodies and forces are nothing but shapes and variations in the structure of space. Particles are just schaumkommen (appearances)!

1935 — Science and the Human Temperament
Strange & Unusual Unverifiable

The greatest change will be in the thinking habits of the human race. It will learn to look at things in a new way. Quantum theory will force it to do so.

1935 — Science and the Human Temperament
Strange & Unusual Unverifiable

The scientist's world-picture is of course not the only possible one. It is not even a complete one. It is just one, an important one, but it is not the whole truth.

1954 — Nature and the Greeks
Strange & Unusual Unverifiable

The present quantum mechanics is not a theory in the sense of the old theories, but rather a collection of rules for the calculation of probabilities.

1961 — My View of the World
Strange & Unusual Unverifiable

The idea that consciousness is a phenomenon of the brain is an illusion. Consciousness is a fundamental property of the universe, and the brain is merely an antenna that tunes into it.

Unknown — Attributed, often cited in discussions of his philosophical views, though specific written source ca…
Strange & Unusual Unverifiable

The total number of minds in the universe is one. In fact, consciousness is a singularity.

1961 — My View of the World
Strange & Unusual Unverifiable

This life of yours which you are living is not merely a piece of the entire existence, but is in a certain sense the whole; only this whole is not so constituted that it can be surveyed in a single glance.

1958 — Mind and Matter
Strange & Unusual Unverifiable

The most amazing thing about the world is that it is comprehensible.

Unknown — Attributed, common philosophical quote.
Strange & Unusual Unverifiable

If you are hungry, you can eat a carrot. If you are thirsty, you can drink water. If you are cold, you can put on a coat. But what do you do if you are lonely?

Unknown — Attributed, often cited in biographical accounts as reflecting his personal struggles.
Strange & Unusual Unverifiable

The best way to escape from the problem is to solve it.

Unknown — Attributed, general motivational quote.
Strange & Unusual Unverifiable

What is life? The physicist's answer to this question is a series of surprises.

1944 — What is Life?
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The quantum mechanical description of reality is certainly incomplete.

1935 — Letter to Albert Einstein
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The task is not so much to see what no one has yet seen; but to think what nobody has yet thought, about that which everybody sees.

Unknown — Attributed, often cited in discussions of scientific innovation.
Strange & Unusual Unverifiable

The world is a dream, and we are the dreamers.

Unknown — Attributed, philosophical musing.
Strange & Unusual Unverifiable

If we are to be honest, we must admit that the present state of physics offers no hope of a satisfactory picture of the world.

1935 — Science and the Human Temperament
Strange & Unusual Unverifiable

There is no quantum jump. There is no such thing as a quantum jump. It is all balderdash.

Circa 1920s — Attributed, reflecting his initial resistance to certain aspects of quantum mechanics.
Strange & Unusual Unverifiable

The human mind is not capable of grasping the universe. We are like a little child entering a huge library. The walls are covered to the ceilings with books in many different tongues. The child knows that someone must have written these books. It does not know who or how. It does not understand the languages in which they are written. But the child notes a definite plan in the arrangement of the books, a mysterious order, which it does not comprehend but only dimly suspects.

1961 — My View of the World
Strange & Unusual Unverifiable

The whole of science is nothing more than a refinement of everyday thinking.

1935 — Science and the Human Temperament
Strange & Unusual Unverifiable