which philosopher held the view that pleasure is the sole good
Hedonism Ethical hedonism is the idea that all people have the right to do everything in their power to achieve the greatest amount of pleasure possible to them. It is also the idea that every person's pleasure should far surpass their amount of pain. Ethical hedonism is said to have been started by Aristippus of Cyrene, a student of Socrates. He held the idea that pleasure is the highest good.[2]
Positive liberty Although Isaiah Berlin's essay "Two Concepts of Liberty" (1958) is typically acknowledged as the first to explicitly draw the distinction between positive and negative liberty, Frankfurt School psychoanalyst and Marxist humanistic philosopher Erich Fromm drew a similar distinction between negative and positive freedom in The Fear of Freedom (1941), predating Berlin's essay by more than a decade.