Martin Fowler's quote seems to be a riff on Weinberg's various folksy observations in The Psychology of Computer Programming -- though maybe Weinberg picked it up from elsewhere.
The Alan Kay quote is a possibly apocryphal story; there are varying accounts[1] (and see [2]).
No list of programming quotes is complete without the Epigrams of Alan Perlis[3].
This one reminds me of The Story of Mel <http://catb.org/jargon/html/story-of-mel.html>;