On Eagle's Wings, 1977, p. 159
As of a Trumpet, On Eagle's Wings
“The first thing necessary for a constructive dealing with time is to learn to live in the reality of the present moment. For psychologically speaking, this present moment is all we have.”
Source: Man’s Search for Himself (1953), p. 227
Context: The first thing necessary for a constructive dealing with time is to learn to live in the reality of the present moment. For psychologically speaking, this present moment is all we have. The past and future have meaning because they are part of the present: a past event has existence now because you are thinking of it at this present moment, or because it influences you so that you, as a living being in the present, are that much different. The future has reality because one can bring it into his mind in the present. Past was the present at one time, and the future will be the present at some coming moment. To try to live in the "when" of the future or the "then" of the past always involves an artificiality, a separating one's self from reality; for in actuality one exists in the present. The past has meaning as it lights up the present, and the future as it makes the present richer and more profound.
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Rollo May 135
US psychiatrist 1909–1994Related quotes
As Quoted in The Gerorgian Times in 2008 http://www.geotimes.ge/index.php?m=home&newsid=12354.eng

Source: The Botany of Desire: A Plant's Eye View of the World

Hagakure (c. 1716)
Source: Hagakure: The Book of the Samurai
Context: There is surely nothing other than the single purpose of the present moment. A man's whole life is a succession of moment after moment. If one fully understands the present moment, there will be nothing else to do, and nothing else to pursue. Live being true to the single purpose of the moment.
Everyone lets the present moment slip by, then looks for it as though he thought it were somewhere else.

“This process leads to the present moment, and to all of us.”
Review of The Tree of Life (2 June 2011) http://rogerebert.suntimes.com/apps/pbcs.dll/article?AID=/20110602/REVIEWS/110609998
Reviews, Four star reviews
Context: Terrence Malick's The Tree of Life is a film of vast ambition and deep humility, attempting no less than to encompass all of existence and view it through the prism of a few infinitesimal lives. The only other film I've seen with this boldness of vision is Kubrick's 2001: A Space Odyssey, and it lacked Malick's fierce evocation of human feeling. … I don't know when a film has connected more immediately with my own personal experience. In uncanny ways, the central events of The Tree of Life reflect a time and place I lived in, and the boys in it are me. If I set out to make an autobiographical film, and if I had Malick's gift, it would look so much like this. … There is a father who maintains discipline and a mother who exudes forgiveness, and long summer days of play and idleness and urgent unsaid questions about the meaning of things. … The film's portrait of everyday life, inspired by Malick's memories of his hometown of Waco, Texas, is bounded by two immensities, one of space and time, and the other of spirituality. The Tree of Life has awe-inspiring visuals suggesting the birth and expansion of the universe, the appearance of life on a microscopic level and the evolution of species. This process leads to the present moment, and to all of us. We were created in the Big Bang and over untold millions of years, molecules formed themselves into, well, you and me.
And what comes after? In whispered words near the beginning, "nature" and "grace" are heard. … The film's coda provides a vision of an afterlife, a desolate landscape on which quiet people solemnly recognize and greet one another, and all is understood in the fullness of time.