Friedrich Wilhelm Nietzsche (born October 15, 1844 – died August 25, 1900) was a German philosopher, cultural critic, poet, and Latin and Greek scholar whose work has exerted a profound influence on Western philosophy and modern intellectual history. He was interested in the enhancement of individual and cultural health, and believed in life, creativity, power, and the realities of the world we live in, rather than those situated in a world beyond.

A famous quote of his is "That which does not kill us makes us stronger.”

More Info: en.m.wikipedia.org