Which work is Martin Heidegger best known for?

Martin Heidegger is primarily known for "Being and Time," which is one of the most significant philosophical works of the 20th century. Published in 1927, this text explores the nature of existence and introduces fundamental concepts, such as "Being," "Dasein" (a German term for human existence), and "Being-in-the-world." Heidegger's inquiries into the meaning of Being have had a profound impact on existentialism, phenomenology, and various other fields, shaping philosophical discourse for decades.

The significance of "Being and Time" lies in its innovative approach to ontology and its emphasis on the individual's experience of existence in a temporal context. This work also marks a turning point in modern philosophy, as it challenges traditional metaphysical views and encourages a deeper investigation of how individuals relate to their world.

While the other works listed contribute to philosophical thought, they do not carry the same weight or recognition as "Being and Time." Each addresses specific ideas within Heidegger's broader philosophical framework but lacks the foundational impact of his primary work.