Things should be made as simple as possible, but not any simpler.
Nationalism is an infantile sickness. It is the measles of the human race.
Not everything that can be counted counts, and not everything that counts can be counted.
My argument was that we could not stop Hitler by cooperating with other bourgeois parties but that only a united working class could stop him.
Our arrangement therefore consisted of two needle counters, past the common front wall of which, without touching it, swept a beam of X-rays.
I went first to France and then to England where I studied and at the same time I tried to make a serious study of the basic Marxist philosophy.
Most people say that is it is the intellect which makes a great scientist. They are wrong: it is character.
I am enough of an artist to draw freely upon my imagination. Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.
He who joyfully marches in rank and file has already earned my contempt. He has been given a large brain by mistake, since for him the spinal cord would suffice.
During conversion, the newly formed nucleus is not always immediately in the ground state, but is at times in one of the possible activated states.