Some species increase, others diminish, and in a short space the generations of living creatures are changed and, like runners, pass on the torch of life.
LucretiusSince you must admit that there is nothing outside the universe, it can have no limit and is accordingly without end or measure. It makes no odds in which part of it you may take your stand; whatever spot anyone may occupy, the universe stretches away from him just the same in all directions without limit.
Lucretius