Friedrich Nietzsche got pretty hung up on the notion of human will; really all he needed were some running shoes, Lycra and a place in the Berlin Marathon.

Success breeds success on a marathon route. If you can prove to yourself that you are doing well, then invariably you will do even better.

In an era when man can no longer dash out of his cave and slay a mammoth, he simply slips on his Lycra and goes for a run.