There is also a large class of mnemonics based on the numbers of letters in successive words. For example, pi is "How I need a drink, alcoholic of course, after the heavy lectures concerning quantum mechanics", and e is "To destroy a building, we detonate a quantity of hydrogen bombs". My home telephone number, oh, 40 years ago, used to be "Fineman's retreat, situated on a tiny estuary". At work it was "Generally an avid editor is fucked up".