Who said "We must use time as a tool, not as a couch."?

This quote is attributed to John F. Kennedy.

We must use time as a tool, not as a couch. - John F. Kennedy

"We must use time as a tool, not as a couch."

John F. Kennedy Time

U.S. President American 1917–1963

"Ask not what your country can do for you – ask what you can do for your country."

"The only thing we have to fear is fear itself."

"Change is the law of life."

"Effort and courage are not enough without purpose and direction."

"Time waits for no one."

"Time spent with loved ones is never wasted."

"I've been alive for a long time. Long enough to know that you can't trust anyone."

"The past always catches up with you."