On the theme of Birth Prevention as a quintessentially Bad Idea(tm), I stumbled across this post chock full of links to writings on the ethics of birth control: http://lawngospel.wordpress.com/the-ethics-of-birth-control/
Sayings of the wise
`I’m sure Aslan would have, if you’d asked him,’ said Fledge.— C.S. Lewis, The Magician’s Nephew, Chapter 12, “Strawberry’s Adventure”
`Wouldn’t he know without being asked?’ said Polly.
`I’ve no doubt he would,’ said the Horse (still with his mouth full). `But I’ve a sort of idea he likes to be asked.’