James Lovelock in Science (8 May 1998)
Internet Article 5
Sigmund Freud in Martino Fine Books (1917)
Book 1
David Epstein in Inside Higher Ed (November 28, 2005)
Journal Article 1
Kevin Kelly (February 22, 2006 at)
Blog 1
Larry Niven, Jerry Pournelle in Pocket Books (1991-03-01)
Book 2
N. J. Dawood, Ibn Khaldūn, Franz Rosenthal in Princeton University Press (1969)
Book 2
Masahiro Morioka in Painless Civilization (Aug.27, 2006)
Book Chapter 1