All my life I have been a poor go-to-sleeper. No matter how great my weariness, the wrench of parting with consciousness is unspeakably repulsive to me. I loathe Somnus, that black-masked headsman binding me to the block; and if in the course of years I have got so used to my nightly ordeal as almost to swagger while the familiar axe is coming out of its great velvet-lined case, initially I had no such comfort or defense: I had nothing - save a door left slightly ajar into Mademoiselle's room. Its vertical line of meek light was something I could cling to, since in absolute darkness my head would swim, just as the soul dissolves in the blackness of sleep.
Vladimir Nabokov
insomnia, night-terrors, sleep, sleeplessness, somnus