Either/Or

Either/Or stands as a foundational work of existentialist thought, presenting the reader with a sustained meditation on the tension between the aesthetic and ethical modes of existence. Through a brilliantly constructed series of essays, letters, and reflections attributed to different pseudonymous authors, Kierkegaard dramatizes the fundamental choice each individual must make about how to live, refusing to resolve the tension through abstract philosophical system-building.

First appearing in 1843 under one of the many pseudonyms Kierkegaard employed throughout his career, Either/Or established its author as the figure now widely recognized as the father of existentialism. The work's radical insistence on subjective choice and individual responsibility shaped Heidegger, Sartre, and Camus, making Kierkegaard a central figure in twentieth-century philosophy despite writing in Danish, a language that limited his immediate readership.