The Diary of an Old Soul is a book of poems written by George MacDonald that can be read as daily devotionals. George MacDonald was a Scottish author and Christian minister who is considered to be one of the main pioneers of the fantasy genre of fiction. MacDonald's books influenced many great authors that followed such as C.S. Lewis, J.R.R. Tolkien, and Edith Nesbit. MacDonald wrote many classics such as Lilith, Phantastes, The Princess and the Goblin, and At the Back of the North Wind.