A major work of existential philosophy by Søren Kierkegaard. Either/Or is divided into two parts, and Part II presents the perspective of the ethical life through a series of letters written by Judge Wilhelm. In contrast to the aesthetic lifestyle explored in Part I, the judge argues for commitment, responsibility, marriage, duty, and moral choice as the foundations of a meaningful existence.

The work examines how individuals shape their identities through the choices they make and explores themes such as freedom, ethics, love, commitment, selfhood, and personal responsibility. It is considered one of the foundational texts of existentialist thought.

The edition translated and edited by Howard V. Hong is highly respected for its scholarly accuracy and extensive notes.