The thing that doesn't fit is the thing that is most interesting.
Science is a way for us to not fool ourselves.
Scientific knowledge is an enabling power to do either good or bad — but it does not carry instructions on how to use it.
All the time you're saying to yourself, 'I could do that, but I won't,'--which is just another way of saying that you can't.
Teach principles not formulas.
It's because somebody knows something about it that we can't talk about physics. It's the things that nobody knows anything about we can discuss.