So many tangles in life are ultimately hopeless that we have no appropriate sword other than to laugh (x )

The scientist, by the very nature of his commitment, creates more and more questions, never fewer. Indeed the measure of our intellectual maturity, one philosophersuggests, is our capacity to feel less and less satisfied with our answers to better problems. (x )

There is a story of an Oxford student who once remarked, "I despise all Americans, but have never met one I didn't like." (x )