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Organisms [...] are directed and limited by their past. They must remain imperfect in their form and function, and to that extent unpredictable since they are not optimal machines. We cannot know their future with certainty, if only because a myriad of quirky functional shifts lie within the capacity of any feature, however well adapted to a present role.
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"Quick Lives and Quirky Changes", p. 65

 

Stephen Jay Gould

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The advanced arithmetical machines of the future will be electrical in nature, and they will perform at 100 times present speeds, or more.
Moreover, they will be far more versatile than present commercial machines, so that they may readily be adapted for a wide variety of operations. They will be controlled by a control card or film, they will select their own data and manipulate it in accordance with the instructions thus inserted, they will perform complex arithmetical computations at exceedingly high speeds, and they will record results in such form as to be readily available for distribution or for later further manipulation.

 

Vannevar Bush

 

We do not rest satisfied with the present. We anticipate the future as too slow in coming, as if in order to hasten its course; or we recall the past, to stop its too rapid flight. So imprudent are we that we wander in the times which are not ours, and do not think of the only one which belongs to us; and so idle are we that we dream of those times which are no more, and thoughtlessly overlook that which alone exists. For the present is generally painful to us. We conceal it from our sight, because it troubles us; and if it be delightful to us, we regret to see it pass away. We try to sustain it by the future, and think of arranging matters which are not in our power, for a time which we have no certainty of reaching. Let each one examine his thoughts, and he will find them all occupied with the past and the future. We scarcely ever think of the present; and if we think of it, it is only to take light from it to arrange the future. The present is never our end. The past and the present are our means; the future alone is our end. So we never live, but we hope to live; and, as we are always preparing to be happy, it is inevitable we should never be so. 172

 

Blaise Pascal

 

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.

 

Rollo May

 

Whoever has approved this idea of order, of the form of European, of English literature, will not find it preposterous that the past should be altered by the present as much as the present is directed by the past.

 

Thomas Stearns (T. S.) Eliot

 

Organisms are not billiard balls, propelled by simple and measurable external forces to predictable new positions on life's pool table. Sufficiently complex systems have greater richness. Organisms have a history that constrains their future in myriad, subtle ways.

 

Stephen Jay Gould