Hedonism

From Conservapedia

Hedonism is a materialist and atheist philosophy which emphasizes the pursuit of personal pleasure above all other considerations, or as the sole consideration in life.

Epicureanism could be considered a form of ancient hedonism. Jeremy Bentham endorsed hedonism in his book: An Introduction to the Principles of Morals and Legislation (1789). Other major contributors to debate about hedonism include Plato, Aristotle, John Stuart Mill, Moore, Sidgwick, Ross, and Broad. [1]

Bentham and his pupil Mill, defended the ethical theory of Utilitarianism (see essay Utilitarianism, 1861 and On Liberty, 1859.).