Whenever life gets you down, Mrs.Brown
And things seem hard or tough
And people are stupid, obnoxious or daft
And you feel that you've had quite enough
Just remember that you're standing on a planet that's evolving
"So remember when you're feeling very small and insecure how amazingly unlikely is your birth, and pray that there's intelligent life somewhere out in space, 'cause there's bugger all down here on Earth!"