What Is Existentialism?

We are taught that the purpose of moral philosophy is to build a perfect cage of virtues. If we just follow the rules—be honest, be kind, be just—we can construct a life of unimpeachable character. We treat ethics like a game of Jenga, where the goal is to carefully stack predefined blocks of 'good' behavior, hoping the tower doesn't collapse. But what if this entire project is based on a misunderstanding? What if the most profound ethical act isn't adding another virtuous block, but confronting the terrifying emptiness at the center of the tower? This perspective suggests that our desperate attempts to define ourselves by a list of abstract virtues is actually a flight from the real, messy business of living. The more we try to become a 'good person' based on an external scorecard, the more we evade the one thing that truly matters: the raw, unscripted act of choosing who we will be in the next moment, and the next.

The philosopher who most sharply articulated this unsettling idea did so not in a dusty academic hall, but in the chaotic aftermath of war. Simone de Beauvoir, witnessing Paris liberated from occupation in 1944, saw a city where old rules and identities had been shattered. People were forced to reinvent their lives, their values, and their very selves from scratch. This collective experience of radical, unasked-for freedom crystallized a question she had been wrestling with alongside Jean-Paul Sartre and their circle. In a short, powerful lecture delivered to a packed audience in 1945, she sought to clarify the philosophy that was being so widely discussed and misunderstood. She was describing the human condition as she saw it—one where we are inescapably responsible for creating meaning in a world that offers none.

Module 1: The Weight of Freedom

We often think of freedom as a gift. But de Beauvoir opens with a radical counter-proposal. What if freedom is a condemnation? This is the core of her argument. We are "condemned to be free." This means we are thrown into the world without a pre-written script, a divine plan, or a universal purpose. Every choice we make, we make alone.

This leads to a profound sense of anxiety. De Beauvoir uses the story of the ancient Greek king, Pyrrhus, to illustrate this. Pyrrhus plans his conquests. First Greece, then Africa, then Asia. His advisor, Cineas, keeps asking a simple question: "And after that?" After each ambitious goal, the question repeats. Pyrrhus has no final answer. This infinite regress of "why" exposes a terrifying truth. Any finite goal is ultimately arbitrary because it can always be surpassed. Your goal is to hit a billion-dollar valuation. And after that? Lead the market in AI. And after that? Every endpoint is just a new beginning, a new project. This endless chain can make any single action feel absurd and pointless.

So what's the solution? Some might seek an absolute justification for their actions, a higher power to sign off on their life's work. De Beauvoir systematically dismantles these options. What about God? If God is an impersonal force, like in Spinoza's philosophy, then He is silent. He demands nothing and justifies nothing. If God is a personal being, as in Christianity, His will is hopelessly ambiguous. She points to the Crusaders, who claimed "God wills it" to justify their violence. But how could they be so sure? Kierkegaard's Abraham, commanded to sacrifice his son, is tormented by this uncertainty. Is the voice he hears from God, or is it a deception? Seeking divine validation only leads to more questions.

If not God, then what about Humanity? Can we dedicate our lives to the service of humankind? De Beauvoir argues this is also impossible. "Humanity" is not a unified entity. It's a collection of competing, often conflicting, groups. To serve the proletariat, you must oppose the capitalist. To defend your country, you must be willing to harm its adversaries. You can only ever act for some people against others. Your decision to build a disruptive technology helps one group of users while potentially displacing an entire industry of workers. There is no clean, universal win. Every action creates winners and losers.

This brings us to the stark reality at the heart of existentialism. We are adrift. There are no external, pre-ordained values. No God, no grand historical narrative, and no universal "humanity" can provide the ultimate justification we crave. This is a heavy burden. But it is also the starting point of true freedom.

Module 2: The World We Build

If there's no pre-written script, how do we find meaning? Do we just give in to despair? De Beauvoir's answer is a firm "no." This is where the philosophy pivots from a seemingly bleak diagnosis to a powerful call to action. Meaning is built.

Her central concept here is that of man as a project, a being of dépassement or transcendence. This simply means we are always reaching beyond our present selves toward the future. We are not static beings. We are defined by our movement, our desires, and our actions. Think about the simple act of enjoyment. Resting in the shade after a long hike isn't just about the absence of effort. It's meaningful because it incorporates the past—the hard climb—and points toward the future, a renewed energy for what's next. When you strip that context away, enjoyment becomes boredom. A beautiful melody repeated endlessly becomes grating. Existence is a constant state of reaching beyond yourself; to be static is to be bored.

This idea radically redefines our relationship with the world. Nothing is truly "ours" until we engage with it through our projects. De Beauvoir states that the sky belongs to those who can fly. The sea belongs to those who can navigate it. It’s a powerful metaphor. You don't own a market by simply identifying it on a slide deck. You own it by building the product, finding the customers, and creating the ecosystem that serves them. You define yourself and your world through your actions. This is a direct challenge to the detached observer. The world isn't a museum you wander through. It's a workshop where you are the artisan.

Let's make this more concrete. De Beauvoir uses the parable of the Good Samaritan. When asked "Who is my neighbor?" Christ doesn't give a definition. He tells a story about a man who acts. The Samaritan makes the wounded man his neighbor through an act of compassion. Relationships, like ownership, are not pre-given. They are founded. The protagonist in Albert Camus's novel The Stranger feels alienated from the world because he rejects all these pre-imposed ties—to his mother, to society. De Beauvoir would say he is correct that these ties are not inherently real. His mistake is failing to see that he has the power to create his own authentic ties through his actions. He could have chosen to grieve, to connect, to act.

This is the existentialist synthesis. It avoids the trap of pure subjectivism—the idea that only my inner world matters. And it avoids the trap of pure objectivism—the idea that I am just a cog in a machine. Instead, it holds both in tension. You, the individual, are the absolute source of meaning. But that meaning only becomes real when you project it onto the world through concrete actions and commitments.