I knew I liked that ole' Carl...

"Humans - who enslave, castrate, experiment on, and fillet other animals - have had an understandable penchant for pretending animals do not feel pain. A sharp distinction between humans and 'animals' is essential if we are to bend them to our will, wear them, eat them - without any disquieting tinges of guilt or regret."

--Carl Sagan & Ann Druyan