Speculation is perfectly all right, but if you stay there you've only founded a superstition. If you test it, you've started a… — Hal Clement Copy Share Image
My interests started about in science and in mathematics; I always thought I was going to be a mathematician. — David Chalmers Copy Share Image
The thing that got me started on the science that I've been building now for about 20 years or so was the… — Stephen Wolfram Copy Share Image