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It has often been said, and certainly not without justification, that the man of science is a poor philosopher. Why then should it not be the right thing for the physicist to let the philosopher do the philosophizing? Such might indeed be the right thing to do a time when the physicist believes he has at his disposal a rigid system of fundamental laws which are so well established that waves of doubt can't reach them; but it cannot be right at a time when the very foundations of physics itself have become problematic as they are now. At a time like the present, when experience forces us to seek a newer and more solid foundation, the physicist cannot simply surrender to the philosopher the critical contemplation of theoretical foundations; for he himself knows best and feels more surely where the shoe pinches. In looking for an new foundation, he must try to make clear in his own mind just how far the concepts which he uses are justified, and are necessities.
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"Physics and Reality" in the Journal of the Franklin Institute Vol. 221, Issue 3 (March 1936), Pages 349-382

 

Albert Einstein

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The supreme task of the physicist is to arrive at those universal elementary laws from which the cosmos can be built up by pure deduction. There is no logical path to these laws; only intuition, resting on sympathetic understanding of experience, can reach them. In this methodological uncertainty, one might suppose that there were any number of possible systems of theoretical physics all equally well justified; and this opinion is no doubt correct, theoretically. But the development of physics has shown that at any given moment, out of all conceivable constructions, a single one has always proved itself decidedly superior to all the rest.

 

Albert Einstein

 

Heinz von Foerster was a physicist and philosopher, who worked extensively in cybernetics, biology and family therapy, although he hated being categorised as belonging to a particular academic discipline. Indeed he once remarked that “I am. Viennese. That is the only label that I have to accept. I come from Vienna; I was born there, that's an established fact” (von Foerster and Poerksen 2002, p. 43)

 

Heinz von Foerster

 

I always believed that at some time fate would take from me the terrible effort and duty of educating myself. I believed that, when the time came, I would discover a philosopher to educate me, a true philosopher whom one could follow without any misgiving because one would have more faith in him than one had in oneself. Then I asked myself: what would be the principles by which he would educate you?—and I reflected on what he might say about the two educational maxims which are being hatched in our time. One of them demands that the educator should quickly recognize the real strength of his pupil and then direct all his efforts and energy and heat at them so as to help that one virtue to attain true maturity and fruitfulness. The other maxim, on the contrary, requires that the educator should draw forth and nourish all the forces which exist in his pupil and bring them to a harmonious relationship with one another. ... But where do we discover a harmonious whole at all, a simultaneous sounding of many voice in one nature, if not in such men as Cellini, men in whom everything, knowledge, desire, love, hate, strives towards a central point, a root force, and where a harmonious system is constructed through the compelling domination of this living centre? And so perhaps these two maxims are not opposites at all? Perhaps the one simply says that man should have a center and the other than he should also have a periphery? That educating philosopher of whom I dreamed would, I came to think, not only discover the central force, he would also know how to prevent its acting destructively on the other forces: his educational task would, it seemed to me, be to mould the whole man into a living solar and planetary system and to understand its higher laws of motion.

 

Friedrich Nietzsche

 

I have always taken as the standard of the mode of teaching and writing, not the abstract, particular, professional philosopher, but universal man, that I have regarded man as the criterion of truth, and not this or that founder of a system, and have from the first placed the highest excellence of the philosopher in this, that he abstains, both as a man and as an author, from the ostentation of philosophy, i.e., that he is a philosopher only in reality, not formally, that he is a quiet philosopher, not a loud and still less a brawling one.

 

Ludwig Andreas Feuerbach

 

Therefore psychologically we must keep all the theories in our heads, and every theoretical physicist who is any good knows six or seven different theoretical representations for exactly the same physics.

 

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