The Oxford Dictionary of Humorous Quotations (Ned Sherrin)
ISBN 0 1986 0289 8.
Neatly categorised by subject and indexed by author this is probably the first (of many) books of quotations you should have. You can get quotations on the web, but sit with a glass of something you like, put the telly off, your feet up and dip into this one. Magic.
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