In my case Pilgrim’s Progress consisted in my having to climb down a thousand ladders until I could reach out my hand to the little clod of earth that I am.
Source:Quoted in a footnote to Jung's letter to Sigmund Freud (February 11, 1910); in Letters of C.G. Jung, 1906-1950, Volume I, (Princeton University Press, ed. 1973), Page 19