Real Value Quotes
Brainpower is the scarcest commodity and the only one of real value.
Robert A. Heinlein (1982). “Friday”
"Hoyt's New Cyclopedia Of Practical Quotations" by Jehiel Keeler Hoyt, Oratio Pro Quinto Roscio Comœdo, X. 29, p. 647-49, 1922.