In all creation, only man cowers and is afraid of life.
Only man is terrified of his own possible splendour and delight.
Only is man agonised in front of the necessity to be something better than he is,
poor mental worm.

Though maybe the mammoth got too big in tusk and teeth,
and the extinct giant elk too big in antlers,
out of fear of the unknown enemy;
so perhaps they too died out from fear,
as man is likely to do.