"It wasn't that I didn't love philosophy. It's that I distrusted a certain facileness in it. Contemporary philosophers, or at least those of the 1950s and 1960s, took themselves to be examining concepts and the implications of concepts—not the facts of the world. So you could find out if your arguments were cogent, felicitous, coherent, and so on. But you couldn't find out if you were right. And in the end I felt dissatisfied with that."
