In lecture three, we explore existentialism, which emerged prominently during and after World War II, focusing on its themes of absurdity and meaning in human life. Dr. Bonevac covers key thinkers like Jean-Paul Sartre, Albert Camus, and Simone de Beauvoir, who argue that existence precedes essence and that individuals must create their own meaning in an inherently meaningless world. The discussion examines critical responses from Saul Bellow and C.S. Lewis, who argue that existentialism artificially isolates individuals from universal moral truths and spiritual dimensions that are inherently known to all humans, suggesting that meaning and purpose are not self-created but discovered through our shared humanity and objective moral order.