The cradle rocks above an abyss, and common sense tells us that our own existence is but a brief crack of light between two eternities of darkness. Although the two are identical twins, man, as a rule, views the prenatal abyss with more calm than the one he is headed for (at some forty-five hundred heartbeats an hour). I know, however, of a young chronophobiac who experienced panic when looking for the first time at homemade movies that had been taken a few weeks before his birth. He saw a world that was practically unchanged-the same house, the same people- and then realized that he did not exist there at all and that nobody mourned his absence.
Vladimir Nabokov
Speak, Memory [19]