Galileo had already made a significant beginning toward a knowledge of the law of motion. He discovered the law of inertia and the law of bodies falling freely in the gravitational field of the earth.

Mere unbelief in a personal God is no philosophy at all.

Logic can take you from point A to point B. Imagination can take you wherever you want

The words of language, as they are written or spoken, do not seem to play any role in my mechanism of thought. The physical entities which seem to serve as elements in thought are certain signs and more or less clear images.

Not all things worth counting are countable and not all things that count are worth counting.

One can only continue to expect to be read if one omits everything that is unimportant.

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