It is unscientific to say that within the many billions of galactic systems, ours is the only planet that supports life in advanced form. Nature shuns one of a kind as much as it abhors a vacuum. Given infinite time and space, anything that occurs at one place or time in the universe will occur elsewhere or "elsewhen."

Rendezvous with Infinity, Cosmic Search Magazine, Volume 1, Number 1, January 1, 1979 (p. 30)