Infinity symbol in bookbinding to indicate that a book is printed on acid-free paper and will therefore be long-lasting. In modern mysticism, the infinity symbol has become identified with a variation of the ouroboros, an ancient image of a snake eating its own tail that has also come to symbolize the infinite, and the ouroboros is sometimes drawn in figure-eight form to reflect this identification, rather than in its more traditional circular form. In the works of Vladimir Nabokov, including "The Gift" and "Pale Fire", the figure-eight shape is used symbolically to refer to the Möbius strip and the infinite, for instance
The Sky Moves Sideways The Sky Moves Sideways The Sky Moves Sideways is the third studio album by British progressive rock band Porcupine Tree, first released in February 1995. "The Sky Moves Sideways" has been compared to Pink Floyd's "Wish You Were Here" because of their similar structure; both albums have extended pieces at the beginning and end, which are the halves of a single song. The track "Moonloop" is an edited and overdubbed version of a 40-minute improvisation by the full live band recorded at the Doghouse studio on 28 June 1994; a section unused on the album featured a drum beat that