I have learned two important things in life. I don't remember the first one, but the second one is write everything down.
If architects built buildings the way programmers write programs, the first woodpecker that came along would destry civilisation. -Murphy's Laws of Computers
Build a man a fire, and he'll be warm for a day. Set a man on fire, and he'll be warm for the rest of his life. -Terry Pratchett.