If atom stocks are inexhaustible, Greater than power of living things to count, If Nature's same creative power were present too To throw the atoms into unions - exactly as united now, Why then confess you must That other worlds exist in other regions of the sky, And different tribes of men, kinds of wild beasts.
LucretiusSome 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.
Lucretius