 When his brother George went to America, Keats wrote to him in great detail, the body of letters becoming "the real diary" and self-revelation of Keats' life, as well as containing an exposition of his philosophy, and the first drafts of poems containing some of Keats' finest writing and thought.Gittings describes them as akin to a "spiritual journal" not written for a specific other, so much as for synthesis.Keats also reflected on the background and composition of his poetry, and specific letters often coincide with or anticipate the poems they describe.