In Sisyphus' case, he is aware of the futility of his task, yet he continues to push the boulder up the mountain. This determination to act in the face of absurdity is what Camus calls "absurd freedom." Sisyphus is free to choose his own response to his situation, and in choosing to continue his labor, he affirms his own existence and creates his own meaning.
Camus argues that Sisyphus' story teaches us to live in the present moment, to focus on the task at hand, rather than getting caught up in thoughts of the past or future. Sisyphus' labor is a never-ending cycle, but it is in the present moment that he finds his freedom. By acknowledging and accepting the absurdity of his situation, Sisyphus is able to find a sense of purpose and fulfillment in the act of pushing the boulder up the mountain.
For Camus, Sisyphus' revolt against the gods, his determination to continue his labor despite its futility, is a powerful symbol of human resilience and defiance. In the face of absurdity, Sisyphus chooses to revolt, to create his own meaning and purpose, rather than succumbing to despair or resignation.
In Albert Camus' philosophical essay, "The Myth of Sisyphus," the French philosopher explores the themes of absurdity, existentialism, and the human condition. At the heart of the essay is the myth of Sisyphus, a figure from ancient Greek mythology who is condemned to roll a massive boulder up a mountain, only to have it roll back down, requiring him to begin the task anew.
You can find the PDF version of "The Myth of Sisyphus" by Albert Camus online, and I encourage you to read the full essay to explore these themes and ideas in more depth.
Camus argues that the human desire for meaning and purpose in life is at odds with the apparent indifference of the universe. This conflict gives rise to the concept of the "absurd," which Camus defines as the confrontation between humanity's desire for significance and the universe's silence. The absurd is the fundamental condition of human existence, and it is up to each individual to confront and respond to it.