The Douglas Adams quote caught my eye this morning, so here are all four of them for you.
The more original a discovery, the more obvious it seems afterwards.
Arthur Koestler (1905 - 1983)
The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at or repair.
Douglas Adams (1952 - 2001), Mostly Harmless
Would those of you in the cheaper seats clap your hands? And the rest of you, if you'll just rattle your jewelry.
John Lennon (1940 - 1980)
The best minds are not in government. If any were, business would hire them away.
Ronald Reagan (1911 - 2004)