マルティン・ハイデッガー was a German philosopher, best known for his work in existentialism and phenomenology. Born in 1889, he is most famous for his book 存在と時間 (Being and Time), published in 1927, where he explores the nature of being and human existence. His ideas have significantly influenced various fields, including philosophy, literature, and psychology. Throughout his career, ハイデッガー engaged with themes such as authenticity, technology, and the relationship between humans and the world. His later works shifted focus to language and poetry, emphasizing the importance of 言語 in shaping our understanding of existence. Despite his controversial political affiliations, his philosophical contributions remain highly regarded.