"If I could come back after five hundred years and find that the Riemann hypothesis or Fermat's last 'theorem' was proved, I would be disappointed, because I would be pretty sure, in view of the history of attempts to prove these conjectures, that an enormous amount of time had been spent on proving theorems that are unimportant to the life of man." -- Morris Kline, from an interview in _Mathematical People_ (eds. Donald J. Albers and G. L. Alexanderson, Contemporary, 1985.)