No one really understands quantum mechanics.

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

If we will only allow that, as we progress, we remain unsure, we will leave opportunities for alternatives.

My rule is, when you are unhappy, think about it. But when you're happy, don't. Why spoil it? You're probably happy for some ridiculous reason and you'd just spoil it to know it.

Science is a way for us to not fool ourselves.

We never are definitely right, we can only be sure we are wrong.

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.