"Africa and the Six ‘I’s: Independence, Investment, Infrastructure, Innovation, Incubation, Inspiration" by Richard Attias, www.huffingtonpost.com. March 11, 2013.
"Aphorisms on man. Translated from the original manuscript of the Rev. John Caspar Lavater, citizen of Zuric. ; [One line from Juvenal]" by Johann Kaspar Lavater, 1790.