"The Twilight of the Idols and The Antichrist" is a philosophical work that critiques the moral and religious values of Western society. The author argues that these values, particularly those of Christianity, are not only false but harmful to society, as they suppress human instincts and hinder humanity's progress. He proposes a new moral system based on individual strength, intellectual honesty, and the affirmation of life, and criticizes the belief in an afterlife. The book is a radical critique of established religion and morality, and a call for a reevaluation of values.

The 3584th greatest book of all time