Nitzsche is a very important figure in history, as he developed the well-known "Superman Theory." His theory has direct connections to Social Darwinism, that was introduced by Herbert Spencer, and consequently with the Theory of Evolution, introduced by Charles Darwin. When Darwin published his theory, people thought that God was "killed," that there was no more meaning in believing in his existence. Therefore, people needed to have someone to inspire them, and with that, Nitzsche came up with the idea of Supermans.