A Quote by Henri Poincare

This harmony that human intelligence believes it discovers in nature - does it exist apart from that intelligence? No, without doubt, a reality completely independent of the spirit which conceives it, sees it or feels it, is an impossibility. A world so exterior as that, even if it existed, would be forever inaccessible to us. But what we call objective reality is, in the last analysis, that which is common to several thinking beings, and could be common to all; this common part, we will see, can be nothing but the harmony expressed by mathematical laws.
A reality completely independent of the spirit that conceives it, sees it, or feels it, is an impossibility. A world so external as that, even if it existed, would be forever inaccessible to us.
So is not mathematical analysis then not just a vain game of the mind? To the physicist it can only give a convenient language; but isn't that a mediocre service, which after all we could have done without; and, it is not even to be feared that this artificial language be a veil, interposed between reality and the physicist's eye? Far from that, without this language most of the initimate analogies of things would forever have remained unknown to us; and we would never have had knowledge of the internal harmony of the world, which is, as we shall see, the only true objective reality.
Beneath multiple specific and individual distinctions, beneath innumerable and incessant transformations, at the bottom of the circular evolution without beginning or end, there hides a law, a unique nature participated in by all beings, in which this common participation produces a ground of common harmony.
Doubt is not a pleasant condition, but certainty is an absurd one. What is most repellent in the System of Nature - after the recipe for making eels from flour - is the audacity with which it decides that there is no God, without even having tried the impossibility. If God did not exist, he would have to be invented." But all nature cries aloud that he does exist: that there is a supreme intelligence, an immense power, an admirable order, and everything teaches us our own dependence on it.
In mathematical analysis we call x the undetermined part of line a: the rest we don't call y, as we do in common life, but a-x. Hence mathematical language has great advantages over the common language.
All nature has come to expect from God a sense of orderliness. Whatever God does carries with it His fingerprint. And in the world around us His fingerprint of orderliness is evident to anybody who is honest with the facts. If you look at nature, you will discover a mathematical exactness. Without this precision, the entire world would be in utter confusion. One plus one always equals two no matter what part of the universe you happen to be in. And the laws of nature operate in beautiful harmony, a harmony that is ordered by God Himself.
Given for one instant an intelligence which could comprehend all the forces by which nature is animated and the respective positions of the beings which compose it, if moreover this intelligence were vast enough to submit these data to analysis, it would embrace in the same formula both the movements of the largest bodies in the universe and those of the lightest atom; to it nothing would be uncertain, and the future as the past would be present to its eye.
Christianity has ever been the enemy of human love; it has forever cursed and expelled and crucified the one passion which sweetens and smiles on human life, which makes the desert blossom as the rose, and which glorifies the common things and common ways of earth. It made of this, the angel of life, a shape of sin and darkness ... Even in the unions which it reluctantly permitted, it degraded and dwarfed the passion which it could not entirely exclude, and permitted it coarsely to exist for the mere necessity of procreation.
A world community can exist only with world communication, which means something more than extensive short-wave facilities scattered; about the globe. It means common understanding, a common tradition, common ideas, and common ideals.
The phrase 'Sense of the Earth' should be understood to mean the passionate concern for our common destiny which draws the thinking part of life ever further onward. The only truly natural and real human unity is the spirit of the Earth. . . .The sense of Earth is the irresistable pressure which will come at the right moment to unite them (humankind) in a common passion.The Age of Nations is past. The task before us now, if we would not perish, is to build the Earth.
Common sense is a phrase employed to denote that degree of intelligence, sagacity, and prudence which is common to all men.
You treat world history as a mathematician does mathematics, in which nothing but laws and formulas exist, no reality, no good and evil, no time, no yesterday, no tomorrow, nothing but an eternal, shallow, mathematical present.
And last of all we have the secondary forms of crystals bursting in upon us, and sparkling in the rigidity of mathematical necessity and telling us, neither of harmony of design, usefulness or moral significance, nothing but spherical trigonometry and Napier's analogies. It is because we have blindly excluded the lessons of these angular bodies from the domain of human knowledge that we are still in doubt about the great doctrine that the only laws of matter are those which our minds must fabricate, and the only laws of mind are fabricated for it by matter.
We cannot learn to love other tourists,-the laws of nature forbid it,-but, meditating soberly on the impossibility of their loving us, we may reach some common platform of tolerance, some common exchange of recognition and amenity.
Business is a noble vocation, directed to producing wealth and improving the world. It can be a fruitful source of prosperity for the area in which it operates, especially if it sees the creation of jobs as an essential part of its service to the common good. This common good also includes the earth... the environmental challenge we are undergoing, and its human roots, concern and affect us all.
We have a common enemy. We have this in common: We have a common oppressor, a common exploiter, and a common discriminator. But once we all realize that we have this common enemy, then we unite on the basis of what we have in common. And what we have foremost in common is that enemy - the white man. He's an enemy to all of us. I know some of you all think that some of them aren't enemies. Time will tell.
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