The proposition that Muslims are welcome in Britain if, and only if, they stop behaving like Muslims is a doctrine which is incompatible with the principles that guide a free society.
All I know is that I've ruled out wearing fairy wings. When I was nine I wanted to get married in fairy wings, and now I realize that's not cool anymore.
Our empirical criterion for a series of theories is that it should produce new facts. The idea of growth and the concept of empirical character are soldered into one.

