“It is a mistake to think that the past is dead. Nothing that has ever happened is quite without influence at this moment.”
As quoted in "The Gentle Philosopher" (2006) by John Little at the Will Durant Foundation https://web.archive.org/web/20130312115951/http://www.willdurant.com/home.html
Context: It is a mistake to think that the past is dead. Nothing that has ever happened is quite without influence at this moment. The present is merely the past rolled up and concentrated in this second of time. You, too, are your past; often your face is your autobiography; you are what you are because of what you have been; because of your heredity stretching back into forgotten generations; because of every element of environment that has affected you, every man or woman that has met you, every book that you have read, every experience that you have had; all these are accumulated in your memory, your body, your character, your soul. So with a city, a country, and a race; it is its past, and cannot be understood without it.
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Will Durant 85
American historian, philosopher and writer 1885–1981Related quotes
On Eagle's Wings, 1977, p. 159
As of a Trumpet, On Eagle's Wings
Source: The Little White Horse

“Even here, nothing ever happens; and nothing ever happens to it.”
1949 - 1958, Speech to the Penguins' (1949)

“Nothing that has ever happened should be regarded as lost for history.”
Source: Theses on the Philosophy of History (1940), III
Context: Nothing that has ever happened should be regarded as lost for history. To be sure, only a redeemed mankind receives the fullness of its past — which is to say, only a redeemed mankind has its past become citable in all its moments. Each moment it has lived becomes a citation à l'ordre du jour — and that day is Judgement Day.
Knowing Yourself: The True in the False (1996)

describing his experiment with mescaline, p. 22-24
The Doors of Perception (1954)
Source: The Doors of Perception & Heaven and Hell
Context: Reflecting on my experience, I find myself agreeing with the eminent Cambridge philosopher, Dr. C. D. Broad, “that we should do well to consider much more seriously than we have hitherto been inclined to do the type of theory which Bergson put forward in connection with memory and sense perception. The suggestion is that the function of the brain and nervous system and sense organs is in the main eliminative and not productive. Each person is at each moment capable of remembering all that has ever happened to him and of perceiving everything that is happening everywhere in the universe. The function of the brain and nervous system is to protect us from being overwhelmed and confused by this mass of largely useless and irrelevant knowledge, by shutting out most of what we should otherwise perceive or remember at any moment, and leaving only that very small and special selection which is likely to be practically useful.” According to such a theory, each one of us is potentially Mind at Large. But in so far as we are animals, our business is at all costs to survive. To make biological survival possible, Mind at Large has to be funneled through the reducing valve of the brain and nervous system. What comes out at the other end is a measly trickle of the kind of consciousness which will help us to stay alive on the surface of this particular planet. To formulate and express the contents of this reduced awareness, man has invented and endlessly elaborated those symbol-systems and implicit philosophies which we call languages. Every individual is at once the beneficiary and the victim of the linguistic tradition into which he has been born—the beneficiary inasmuch as language gives access to the accumulated records of other people's experience, the victim in so far as it confirms him in the belief that reduced awareness is the only awareness and as it bedevils his sense of reality, so that he is all too apt to take his concepts for data, his words for actual things. That which, in the language of religion, is called “this world” is the universe of reduced awareness, expressed, and, as it were, petrified by language. The various “other worlds,” with which human beings erratically make contact are so many elements in the totality of the awareness belonging to Mind at Large. Most people, most of the time, know only what comes through the reducing valve and is consecrated as genuinely real by the local language. Certain persons, however, seem to be born with a kind of by-pass that circumvents the reducing valve. In others temporary by-passes may be acquired either spontaneously, or as the result of deliberate “spiritual exercises,” or through hypnosis, or by means of drugs. Through these permanent or temporary by-passes there flows, not indeed the perception “of everything that is happening everywhere in the universe” (for the by-pass does not abolish the reducing valve, which still excludes the total content of Mind at Large), but something more than, and above all something different from, the carefully selected utilitarian material which our narrowed, individual minds regard as a complete, or at least sufficient, picture of reality.

“For a moment, nothing happened. Then, after a second or so, nothing continued to happen.”
Source: The Hitchhiker's Guide to the Galaxy