The White Goddess: a Historical Grammar of Poetic Myth is a book-length essay on the nature of poetic myth-making by the English writer Robert Graves. First published in 1948, the book is based on earlier articles published in Wales magazine; corrected, revised and enlarged editions appeared in 1948, 1952 and 1961. The White Goddess represents an approach to the study of mythology from a decidedly creative and idiosyncratic perspective. Graves proposes the existence of a European deity, the "White Goddess of Birth, Love and Death", much similar to the Mother Goddess, inspired and represented by the phases of the Moon, who lies behind the faces of the diverse goddesses of various European and pagan mythologies.
Graves argues that "true" or "pure" poetry is inextricably linked with the ancient cult-ritual of his proposed White Goddess and of her son.
Graves first wrote the book under the title of The Roebuck in the Thicket in a three-week period during January 1944, only a month after he had finished The Golden Fleece. He then left the book to focus on King Jesus, a historical novel about the life of Jesus. Returning to The Roebuck in the Thicket, he renamed it The Three-Fold Muse, before finishing it and retitling it as The White Goddess. In January 1946 he sent it to the publishers, and in May 1948 it was published in the UK, and in June 1948 in the US, as The White Goddess: a Historical Grammar of Poetic Myth.
Graves believed that one could be in the true presence of the White Goddess when reading a poem, but in his view, this could be achieved only by a true poet of the wild, and not a classical poet, or even a Romantic poet, of whom he spoke critically: "The typical poet of the 19th-century was physically degenerate, or ailing, addicted to drugs and melancholia, critically unbalanced and a true poet only in his fatalistic regard for the Goddess as the mistress who commanded his destiny".
Graves described The White Goddess as "a historical grammar of the language of poetic myth".