Written after Nietzsche had ended his friendship with Richard Wagner and had been forced to leave academic life through ill health, Human, All Too Human (1878) can be read as a monument to his personal crisis. It also marks the point when he matured as a philosopher, rejecting the German romanticism espoused by Wagner and Schopenhauer and instead returning to sources in the French Enlightenment. Here he sets out his unsettling views in a series of 638 stunning aphorisms - assessing subjects ranging from art to arrogance, boredom to passion, science to vanity and women to youth. This work also contains the seeds of concepts crucial to Nietzsche's later philosophy, such as the will to power and the need to transcend conventional Christian morality. The result is one of the cornerstones of his life's work.

弗里德里希·尼采（Friedrich Nietzsche, 1844-1900），19世纪德国哲学家，唯意志论和生命哲学主要代表之一，被认为是世界最伟大的思想家之一。

早年在波恩大学和莱比锡大学学习，获博士学位。不到25岁就被聘为瑞士巴塞尔大学的古典语文学副教授，并在一年以后成为正教授。一生著述颇丰，如《悲剧的诞生》、《查拉图斯特拉如是说》、《善恶的彼岸》、《强力意志》等，对20世纪的思想界产生重大影响。1889年初，在意大利的都灵街头摔倒，就此精神错乱，于11年后在德国的魏玛去世。