In Canto One of his poem John Shade (the poet in VN's novel Pale Fire, 1962) describes his childhood fit when he felt distributed through space and time and says that his foot was upon a mountaintop:
A thread of subtle pain,
Tugged at by playful death, released again,
But always present, ran through me. One day,
When I'd just turned eleven, as I lay
Prone on the floor and watched a clockwork toy -