Heideggerian concepts are rooted in the philosophy of Martin Heidegger, a 20th-century German thinker. Central to his ideas is the notion of Being, which he explores in his seminal work, Being and Time. Heidegger emphasizes the importance of understanding existence and our relationship to the world, focusing on how individuals experience their own being. Another key concept is Dasein, which refers to human existence and its unique capacity for self-awareness. Heidegger argues that Dasein is always situated in a specific context, shaped by time and place, and that this situatedness influences how we interpret our experiences and understand our existence.