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.

弗裏德裏希·尼采（Friedrich Nietzsche, 1844-1900），19世紀德國哲學傢，唯意誌論和生命哲學主要代錶之一，被認為是世界最偉大的思想傢之一。

早年在波恩大學和萊比锡大學學習，獲博士學位。不到25歲就被聘為瑞士巴塞爾大學的古典語文學副教授，並在一年以後成為正教授。一生著述頗豐，如《悲劇的誕生》、《查拉圖斯特拉如是說》、《善惡的彼岸》、《強力意誌》等，對20世紀的思想界産生重大影響。1889年初，在意大利的都靈街頭摔倒，就此精神錯亂，於11年後在德國的魏瑪去世。