I remember my melancholy was intolerable; I felt inclined to cry; I sat and wondered and wondered uncomfortably; the consciousness that everything was strange weighed terribly upon me; I could understand that it was all foreign and strange. I recollect I awoke from this state for the first time at Basle, one evening; the bray of a donkey aroused me, a donkey in the town market. I saw the donkey and was extremely pleased with it, and from that moment my head seemed to clear.”
From The Idiot by Fyodor Dostoyevsky.