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21 " The reality we can put into words is never reality itself. "
― Werner Heisenberg
22 " إن أول جرعة من كأس العلوم الطبيعية سوف تحوّلك إلى ملحد، ولكن فى قاع الكأس، ستجد الله فى إنتظارك.. "
23 " We have to remember that what we observe is not nature in itself butnature exposed to our method of questioning. "
24 " If nature leads us to mathematical forms of great simplicity and beauty—by forms, I am referring to coherent systems of hypotheses, axioms, etc.—to forms that no one has previously encountered, we cannot help thinking that they are “true,” that they reveal a genuine feature of nature…. You must have felt this too: the almost frightening simplicity and wholeness of the relationships which nature suddenly spreads out before us and for which none of us was in the least prepared. "
25 " The existing scientific concepts cover always only a very limited part of reality,and the other part that has not yet been understood is infinite. Whenever weproceed from the known into the unknown we may hope to understand, but wemay have to learn at the same time a new meaning of the word ‘understanding’. "
26 " In classical physics, science started from the belief – or should one say, from the illusion? – that we could describe the world, or least parts of the world, without any reference to ourselves. "
27 " Only a few know, how much one must know, to know how little one knows "
28 " [The probability wave] meant a tendency for something. It was a quantitative version of the old concept of "potentia" in Aristoelian philosophy. It introduced something standing in the middle between the idea of an event and the actual event, a strange kind of physical reality just in the middle between possibility and reality. "
29 " We can never know anything. "
30 " This [chaotic environment,] I felt, was only possible because all these types of order were partial, mere fragments that had split off from a central order; they might not have lost their creative force, but they were no longer directed toward a unifying center. Its absence was brought home to me with increasingly painful intensity the longer I listened. I was suffering almost physically, but I was quite unable to find a way towards the center through the thicket of conflicting opinions. ...There was a hush as, high above us, [a young violinist] struck up the first great D minor chord of Bach’s Chaconne. All at once, and with utter certainty, I had found my link with the center….The clear phrases of the Chaconne touched me like a cool wind, breaking through the mist and revealing the towering structures beyond. There has always been a path to the central order in the language of music, in philosophy and in religion, today no less than in Plato’s day and in Bach’s. That I now knew from my own experience. "
31 " Modern physics plays perhaps only a small role in this dangerous process of unification. But it helps at two very decisive points to guide the development into a calmer kind of evolution. First, it shows that the use of arms in the process would be disastrous and, second, through its openness for all kinds of concepts it raises the hope that in the final state of unification many different cultural traditions may live together and may combine different human endeavors into a new kind of balance between thought and deed, between activity and meditation. "
― Werner Heisenberg , Physics and Philosophy: The Revolution in Modern Science
32 " There is a general awareness that contenporary physics has broughy about an important revision in man's conception of the universe and his relation to it. In no portion of physics does this suggestion show itself more pointedly than in the principle of indeterminacy of quantum mechanics. "
