People Quotes - Page 972
Dean Koontz (2007). “The Darkest Evening of the Year: A Novel”, p.52, Bantam
David Starr Jordan (1910). “The Call of the Nation: A Plea for Taking Politics Out of Politics”
"Mathematics without Apologies: Portrait of a Problematic Vocation". Book by Michael Harris, 2015.
David Hume (1793). “Essays and Treatises on Several Subjects”, p.130