existentialism

Branch of philosophy based on the situation of the individual in an absurd or meaningless universe where humans have free will. Existentialists argue that people are responsible for and the sole judge of their actions as they affect others. The origin of existentialism is usually traced back to the Danish philosopher Kierkegaard; among its proponents were Martin Heidegger in Germany and Jean-Paul Sartre in France.

All self-aware individuals can grasp or intuit their own existence and freedom, and individuals must not allow their choices to be constrained by anything – not even reason or morality. This freedom to choose leads to the notion of nonbeing, or nothingness, which can provoke angst or dread.