William Miller, Return to Life Through Contrology http://books.google.com/books?id=j7W-HAAACAAJ (1960)
“Only if our citizens are physically fit will they be fully capable of such an effort.”
1960, Sport at the New Frontier: The Soft American
Context: But physical fitness is as vital to the activities of peace as to those of war, especially when our success in those activities may well determine the future of freedom in the years to come. We face in the Soviet Union a powerful and implacable adversary determined to show the world that only the Communist system possesses the vigor and determination necessary to satisfy awakening aspirations for progress and the elimination of poverty and want. To meet the challenge of this enemy will require determination and will and effort on the part of all Americans. Only if our citizens are physically fit will they be fully capable of such an effort.
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John F. Kennedy 469
35th president of the United States of America 1917–1963Related quotes

1960, Sport at the New Frontier: The Soft American

“Effort only fully releases its reward after a person refuses to quit.”

Presidential address to the AFPFL Supreme Council Session (August 1946)

“He was one of those rare men who are capable of being fully in love only once in their lives.”
Source: The Prince of Tides

1963, Remarks Prepared for Delivery at the Trade Mart in Dallas

“In modern industrial society only minimal effort is necessary to satisfy one's physical needs.”
"Surrogate Activities", item 40
Industrial Society and Its Future (1995)

1960, Sport at the New Frontier: The Soft American

1960s, Operating Manual for Spaceship Earth (1963)

Interview on Charlie Rose https://archive.org/details/WHUT_20100614_130000_Charlie_Rose (2000)