"Life Is Worth Living". TV Series (1952-1957); transcript was later published in Fulton J. Sheen "Life is Worth Living: First and Second Series" (Second Series, p. 186), 1953.
Brian Solis (2011). “Engage!, Revised and Updated: The Complete Guide for Brands and Businesses to Build, Cultivate, and Measure Success in the New Web”, p.3, John Wiley & Sons