Sartrean Existentialism is a philosophical movement founded by Jean-Paul Sartre, emphasizing individual freedom and responsibility. It posits that existence precedes essence, meaning that people are not born with a predetermined purpose; instead, they create their own meaning through choices and actions. This philosophy highlights the importance of personal experience and the subjective nature of reality. Central to Sartrean Existentialism is the idea of "bad faith," where individuals deceive themselves to escape the anxiety of absolute freedom. Sartre argues that embracing one's freedom leads to authenticity, urging people to confront their choices and the weight of their responsibilities in a seemingly indifferent universe.