Being and Time (1927) - Heidegger's introduction to the concept of Dasein, 'being-in-the-world,' and how such being influences and explains the world and humanity’s position within it.
Kant and the Problem of Metaphysics (1929) - An interpretation of Kant’s work framed in terms of the question of being.
The Essence of Truth (1930) - An argument against thinking of truth as ‘correctness’ and for thinking of truth as ‘unconcealment’–in a manner similar to that of Plato’s allegory of the cave.
The Fieldpath (1949) - An allegory that uses a field path near Heidegger’s home to explore the concept of being.
Off the Beaten Track (1950) - A series of essays that discusses art and science in terms of being, as well as Nietzsche, Hegel, and Aniximander.
The Question Concerning Technology (1954) - A discussion on the relationship between humanity and technology, where Heidegger highlights the dangers of technological enframing, or technology as the dominant mode of truth.
Introduction to Metaphysics (1953) - An analysis of early Greek thought and their understanding of Dasein (being), and the adulteration of the understanding of Dasein over the course of history.
What Is Called Thinking? (1954) - A theory on the nature of thinking, as well as how science has changed our understanding of thinking. He posits that thinking is a fundamentally different system from scientific observation and should be treated as such.
What Is Philosophy? (1956) - An exploration into the value and task of philosophy, particularly through the lens of being. He argues that philosophy is fundamentally about being, as opposed to logic or other often purported values.
On the Way to Language (1959) - An exploration into how language is formed by and relates to being.
Contributions to Philosophy (Written 1936-1938, Published 1999) - A shift in Heidegger’s thought, where he identifies the event of Dasein (being) as an action of humans.
Black Notebooks (2014) - A varied collection of Heidegger's notes, which he used to write down before going to sleep.
