Albert Einstein

Most of them are somewhat odd, uncommunicative, solitary fellows, really less like each other, in spite of these common characteristics, than the hosts of the rejected. What has brought them to the temple? That is a difficult question and …

Were an angel of the Lord to come and drive all the people belonging to these two categories out of the temple, the assemblage would be seriously depleted, but there would still be some men, of both present and past times, left inside. Our …

In the temple of science are many mansions, and various indeed are they that dwell therein and the motives that have led them thither.

I lie on the beach like a crocodile and let myself be roasted by the sun. I never see a newspaper and don't give a damn for what is called the world.

The most beautiful fate of a physical theory is to point the way to the establishment of a more inclusive theory, in which it lives on as a limiting case.

Unser ganzer gepriesener Fortschritt der Technik, überhaupt die Civilisation, ist der Axt in der Hand des pathologischen Verbrechers vergleichbar.

...to the question whether or not the motion of the Earth in space can be made perceptible in terrestrial experiments. We have already remarked... that all attempts of this nature led to a negative result. Before the theory of relativity …

Therefore it is by no means an idle game if we become practiced in analysing long-held commonplace concepts and showing the circumstances on which their justification and usefulness depend, and how they have grown up, individually, out of …

Concepts that have proven useful in ordering things easily achieve such authority over us that we forget their earthly origins and accept them as unalterable givens.

How does it happen that a properly endowed natural scientist comes to concern himself with epistemology?

Es ist bequem mit dem Einstein. Jedes Jahr widerruft er, was er das vorige Jahr geschrieben hat.

By a clock we understand anything characterized by a phenomenon passing periodically through identical phases so that we must assume, by the principle of sufficient reason, that all that happens in a given period is identical with all that …

We shall, therefore, assume the complete physical equivalence of a gravitational field and a corresponding acceleration of the reference system.

The mass of a body is a measure of its energy content.

Everything should be made as simple as possible, but not simpler.