Human, All Too Human (1878) marks the point where Nietzsche abandons German romanticism for the French Enlightenment. At a moment of crisis in his life (no longer a friend of Richard Wagner, forced to leave academic life through ill health), he sets out his views in a scintillating and bewildering series of aphorisms which contain the seeds of his later philosophy (e.g. the will to power, the need to transcend conventional Christian morality). The result is one of the cornerstones of his life's work. It well deserves its subtitle A Book for Free Spirits , and its original dedication to Voltaire, whose project of radical enlightenment here finds a new champion. Beyond Good and Evil (1886) is a scathing and powerful critique of philosophy, religion and science. Here Nietzsche presents us with problems and challenges that are as troubling as they are inspiring, while at the same time outlining the virtues, ideas, and practices which will characterise the philosophy of the future. Relentless, energetic, tirelessly probing, he both determines that philosophy's agenda and is himself the embodiment of the type of thought he wants to foster.

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。