Aristotle: While Aristotle believed in the importance of friendship, he did not believe that it was necessary for
happiness. In his Nicomachean Ethics, Aristotle argues that happiness is the ultimate goal of human life and that it can be achieved through the cultivation of virtues such as courage, wisdom, and justice. While Aristotle believed that friendships contribute to a person's overall
happiness, he did not believe that they were necessary for it.
Seneca: Seneca, a Roman philosopher and statesman, also disagreed with Epicurus' definition of
happiness. In his essay "On the Happy Life," Seneca argues that happiness comes from within and that it is not dependent on external factors such as friendships. He believed that
happiness can be achieved through the cultivation of virtues such as wisdom, courage, and justice, and that one should not depend on external factors for their happiness.
René Descartes: Descartes, a French philosopher and mathematician, also disagreed with Epicurus' definition of happiness. In his Meditations on First Philosophy, Descartes argues that
happiness comes from within and that it is not dependent on external factors such as friendships or material possessions. He believed that
happiness can be achieved through the cultivation of a clear and distinct understanding of oneself and the world around them.