"وجود و زمان" (Being and Time) is a philosophical work by Martin Heidegger, published in 1927. It explores the nature of existence and the concept of time, emphasizing how human beings experience their own being in relation to the world around them. Heidegger argues that understanding our existence requires an examination of our temporal nature. The book introduces key concepts such as Dasein, which refers to the experience of being that is unique to humans. Heidegger discusses how our awareness of time influences our understanding of ourselves and our relationships with others, ultimately shaping our experience of reality.