“Light and matter are both single entities, and the apparent duality arises in the limitations of our language.”
"Introductory" in The Physical Principles of the Quantum Theory (1930) as translated by Carl Eckhart and Frank C. Hoyt, p. 10
Context: Light and matter are both single entities, and the apparent duality arises in the limitations of our language. It is not surprising that our language should be incapable of describing the processes occurring within the atoms, for, as has been remarked, it was invented to describe the experiences of daily life, and these consist only of processes involving exceedingly large numbers of atoms. Furthermore, it is very difficult to modify our language so that it will be able to describe these atomic processes, for words can only describe things of which we can form mental pictures, and this ability, too, is a result of daily experience. Fortunately, mathematics is not subject to this limitation, and it has been possible to invent a mathematical scheme — the quantum theory — which seems entirely adequate for the treatment of atomic processes; for visualisation, however, we must content ourselves with two incomplete analogies — the wave picture and the corpuscular picture.
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Werner Heisenberg 42
German theoretical physicist 1901–1976Related quotes
'Search for the Real in the Visual Arts', p. 43
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Religion in the Making (February 1926), Lecture IV: "Truth and Criticism" http://www.mountainman.com.au/whiteh_4.htm.
1920s
Green Party presidential candidacy speech (2000)
Source: Dialogues of the Soul and Mortal Self in Time (1975), p. 76
Source: Nationalism and Culture (1937), Ch. 1 "The Insufficiency of Economic Materialism"
Context: Every process which arises from our physical being and is related to it, is an event which lies outside of our volition. Every social process, however, arises from human intentions and human goal setting and occurs within the limits of our volition. Consequently, it is not subject to the concept of natural necessity. … We are here stating no prejudiced opinion, but merely an established fact. Every result of human purposiveness is of indisputable importance for man's social existence, but we should stop regarding social processes as deterministic manifestations of a necessary course of events. Such a view can only lead to the most erroneous conclusions and contribute to a fatal confusion in our understanding of historical events.
It is doubtless the task of the historian to trace the inner connection of historical events and to make clear their causes and effects, but he must not forget that these connections are of a sort quite different from those of natural physical events and must therefore have quite a different valuation.
“Creativity arises out of the tension between spontaneity and limitations”
Source: The Courage to Create (1975), Ch. 6 : On the Limits of Creativity, p. 115
Context: Creativity arises out of the tension between spontaneity and limitations, the latter (like the river banks) forcing the spontaneity into the various forms which are essential to the work of art or poem.
Source: The Jungles of Randomness: A Mathematical Safari (1997), Chapter 2, “Sea of Life” (p. 25)