Final answer:
Jean-Paul Sartre believed that a meaningful life is one that embraces freedom and responsibility, where individuals create their own essence through their choices and actions.
Step-by-step explanation:
According to Jean-Paul Sartre, a meaningful life is one that embraces freedom and takes responsibility for one's own actions. Sartre believed that humans are not born with a predetermined essence or purpose, but rather, they create their own essence through their choices and actions.
He emphasized the importance of self-examination and living authentically, without conforming to societal expectations.