Permanently Philosophically Puzzled
Bertrand Russell, as quoted by Ved Mehta:
You know the best remark [G. E.] Moore ever made? I asked him one time who his best pupil was, and he said ‘Wittgenstein’. I said, ‘Why?’ ‘Because, Bertrand, he is my only pupil who always looked puzzled.’ … That was such a good remark, such a good remark. It was also, incidentally, very characteristic of both Moore and Wittgenstein. Wittgenstein was always puzzled.
Ved Mehta, Fly and the Fly-Bottle, p. 42