The rung of a ladder was never meant to rest upon, but only to hold a man's foot long enough to enable him to put the other somewhat higher. Thomas Henry Huxley
For luck you carried a horse chestnut and a rabbit's foot in your right pocket. The fur had been worn off the rabbit's foot long ago and the bones and the sinews were polished by the wear. The claws scratched in the lining of your pocket and you knew your luck was still there. Ernest Hemingway