When Nature first created man, monkey, and bull, she endowed the man with forty years of life, the monkey with forty, and the bull with twenty. The man wanted more, and the monkey and the bull volunteered to help him out.
"Twenty's enough for me," said the monkey. "Man can have my other twenty." "And I'll give him ten of mine," said the bull. And thus it came about that man's life runs to seventy years, on the average, and is divided into these three periods: first forty years, normal living; next twenty, monkey business; last ten, shooting the bull.