Those who have an interest in keeping the machinery of war going will stop at nothing to make public opinion subservient to their murderous ends.

Violence sometimes may have cleared away obstructions quickly, but it never has proved itself creative.

E=mc2. Energy equals mass times the speed of light squared

You must be aware that most men (and also not only a few women) are by nature not monogamous. This nature makes itself even more forceful when tradition and circumstance stand in an individual's way.

But science can only be created by those who are thoroughly imbued with the aspiration toward truth and understanding. This source of feeling, however, springs from the sphere of religion. To this there also belongs the faith in the possibility that the regulations valid for the world of existence are rational, that is, comprehensible to reason. I cannot conceive of a genuine scientist without that profound faith. The situation may be expressed by an image: science without religion is lame, religion without science is blind.

Never let yourself be seduced by any problem, no matter how difficult.

Condemnation without investigation is the height of ignorance