No one really understands quantum mechanics.

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

What is not surrounded by uncertainty cannot be the truth.

There are 10^11 stars in the galaxy. That used to be a huge number. But it's only a hundred billion. It's less than the national deficit! We used to call them astronomical numbers. Now we should call them economical numbers.

Computer science is not as old as physics; it lags by a couple of hundred years. However, this does not mean that there is significantly less on the computer scientist's plate than on the physicist's: younger it may be, but it has had a far more intense upbringing!

I don't believe I can really do without teaching.

To develop working ideas efficiently, I try to fail as fast as I can.