So, ultimately, in order to understand nature it may be necessary to have a deeper understanding of mathematical relationships. But the real reason is that the subject is enjoyable, and although we humans cut nature up in different ways, and we have different courses in different departments, such compartmentaliz ation is really artificial, and we should take our intellectual pleasures where we find them.

I couldn't claim that I was smarter than sixty-five other guys--but the average of sixty-five other guys, certainly!

I think we can safely assume that no one understands quantum mechanics.

If you think you understand quantum mechanics, you don't understand quantum mechanics.

The only way to deep happiness is to do something you love to the best of your ability

All theoretical chemistry is really physics; and all theoretical chemists know it.

A philosopher once said, 'It is necessary for the very existence of science that the same conditions always produce the same results.' Well, they don't!