"Consider the tortise and the hare, you exercise worshipers. The tortise just loafs his way through life, and has probably never been inside a gymnasium. The hare, on the other hand, is a bounder from away back, who sees no reason to walk when he can. His ife is a long round of nip-ups. Turtles have been known to live more than a hundred and fifty years (tops in the animal kingdom), and some people claim they live a lot longer. How many old rabbits do you know? Does this mean that exercise is bad for you? Now, now, let's not jump to conclusions. Let's not do any jumping at all, in fact - there are many other forms of exercise which are much safer, especially if you're over forty."
Good Reading Rack Service, 1955