Letter to Harriot Hunt (1853), as quoted in "The Grimké Sisters from South Carolina: Pioneers for Woman's [sic] Rights and Abolition" by Gerda Lerner, Editorial Oxford University Press, (p. 241), 1998.
Judith M. Bardwick (1995). “Danger in the Comfort Zone: From Boardroom to Mailroom--how to Break the Entitlement Habit That's Killing American Business”, p.229, AMACOM Div American Mgmt Assn