There exists a striking unconscious affinity between Georg Cantor's attempt to truss up the infinite and René Descartes's attempt to clap numbers onto space through the invention of analytic geometry. Both efforts are rooted in the quest for certainty or, to turn the coin over, in the struggle to master persistent anxiety stemming from the early period. Like the gap and like the number, spatial perception commences early in life as the infant takes the object inside and holds it there as emotional, developmental foundation. Indeed, our very ability to conceive of objects as separate in space is tied integrally to what I have termed (following Mahler) the separation—individuation phase of our infantile experience.