Work hard to find something that fascinates you.

There is no authority who decides what is a good idea.

Science is uncertain.

One cannot understand... the universality of laws of nature, the relationship of things, without an understanding of mathematics. There is no other way to do it.

Some people think Wheeler's gotten crazy in his later years, but he's always been crazy.

You know how it always is, every new idea, it takes a generation or two until it becomes obvious that there's no real problem. It has not yet become obvious to me that there's no real problem. I cannot define the real problem, therefore I suspect there's no real problem, but I'm not sure there's no real problem.

If an apple was magnified to the size of the Earth, then the atoms in the apple would be approximately the size of the original apple.