“Human resources are the most valuable assets the world has. They are all needed desperately.”
Source: Tomorrow Is Now (1963), p. 71
             Re: United States Committee for UNICEF (25 July 1963); Box 11, President's Outgoing Executive Correspondence Series, White House Central Chronological File, Presidential Papers, Papers of John F. Kennedy http://www.jfklibrary.org/Research/Research-Aids/Ready-Reference/JFK-Quotations.aspx 
1963
        
“Human resources are the most valuable assets the world has. They are all needed desperately.”
Source: Tomorrow Is Now (1963), p. 71
Lorsch & Thomas J. Tierney (2002), Aligning stars, p. 73
                                        
                                        "The Energy Crisis — Why Our World Will Never Again Be the Same", in Redbook (1974); later in Progress As If Survival Mattered : A Handbook For A Conserver Society (1977) by Hugh Nash, p. 166 
1970s
                                    
“Your energy is a valuable resource, distribute it wisely.”
Source: Disrupt You! (2015), p. 42
Source: Take The Risk (2008), p. 64
The Past Didn't Go Anywhere, Righteous Babe Records (1996)