In my opinion, Satoshi wrote the best one on the peer-to-peer foundation.
http://p2pfoundation.ning.com/forum/topics/bitcoin-open-source
Here's my [favorite quote].(https://highlighter.com/e/note1dv8gue4e25za3d5p2ej4krcp7kaykfpfpggn6lk393c7zjdacp3s9855l5)