“A man feels impelled to do something to keep awake.”

As quoted in What Type Am I? : Discover Who You Really Are (1998) by Renee Baron, p. 110

Exchange in an interview between John Dickerson and James Mattis on CBS' "Face the Nation" on May 28, 2017.

1950s, Atoms for Peace (1953)
Context: I feel impelled to speak today in a language that in a sense is new--one which I, who have spent so much of my life in the military profession, would have preferred never to use. That new language is the language of atomic warfare. The atomic age has moved forward at such a pace that every citizen of the world should have some comprehension, at least in comparative terms, of the extent of this development of the utmost significance to every one of us. Clearly, if the people of the world are to conduct an intelligent search for peace, they must be armed with the significant facts of today's existence.

Wishful Thinking: A Theological ABC (1973)
Context: If you don't have doubts you're either kidding yourself or asleep. Doubts are the ants in the pants of faith. They keep it awake and moving.

Source: Aphorisms and Reflections (1901), p. 113

Academy of Achievement interview (1991)
Context: My life is pretty well at peace, and the profession is more of an avocation. It's a calling, if you like, rather than a job. I do what I feel impelled to do, as an artist would. Scientists function in the same way. I see all these as creative activities, as all part of the process of discovery. Perhaps that's one of the characteristics of what I call the evolvers, any subset of the population who keep things moving in a positive, creative, constructive way, revealing the truth and beauty that exists in life and in nature.

In Your Eyes
Song lyrics, So (1986)
Context: I get so tired of working so hard for our survival
I look to the time with you to keep me awake and alive.