This paper is an exploration of gratitude as a fundamental concept in psychoanalysis. Melanie Klein’s classic article “Envy and Gratitude” (1957) named gratitude at one pole on an axis of human suffering and flourishing, but with a few notable exceptions, the article stimulated research into envy. This paper explores the historical and philosophical traditions that have, to some extent unconsciously, influenced our contemporary understandings of gratitude. The paper also works to explore the social and ethical meanings of gratitude as well as gratitude’s psychoanalytic significance. The aim is to uncover the overall psychic significance of gratitude and its place in human flourishing.