It is true that my parents were worried because I began to speak fairly late, so that they even consulted a doctor. I can't say how old I was - but surely not less than three.

Marvellous, what ideas the young people have these days. But I don't believe a word of it.

The Universe is difficult to comprehend because it is obvious.

With fame I become more and more stupid, which of course is a very common phenomenon.

If [quantum theory] is correct, it signifies the end of physics as a science.

The word God is for me nothing more than the expression and product of human weaknesses.

Solutions to tough problems should be made as simple as possible - and no simpler.