“Indeed, it is sometimes almost as if the problem had to be forgotten to be solved.”

Source: 1970s and later, From Utopian Theory to Practical Applications, 1970, p. 10

Merton (1968) "The Matthew Effect In Science", In: Science Vol. 159, no. 3810 (5 January 1968), p. 56-63: On scientists, the Nobel Prizes, and the Matthew effect in scientific research.
Context: The role of outstanding scientists in influencing younger associates is repeatedly emphasized in the interviews with laureates. Almost invariably they lay great emphasis on the importance of problem-finding, not only problem-solving. They uniformly express the strong conviction that what matters most in their work is a developing sense of taste, of judgment, in acting setting upon problems that are of fundamental importance. And, typically, they report that they acquired this sense for the significant problem during their years of training in evocative environments. Reflecting on his years as a novice in the laboratory of a chemist of the first rank, one laureate reports that he "led me to look for important things, whenever possible, rather than work on endless detail or to work just to improve accuracy rather than making a basic new contribution."

Source: World of the Five Gods series, Paladin of Souls (2003), p. 36

Source: Wild: From Lost to Found on the Pacific Crest Trail

World Design Science Decade 1965-1975 Phase I (1965), Document 3 : Comprehensive Thinking, "Venus Proximity Day", p. 33 http://challenge.bfi.org/sites/challenge.bfi.org/files/pdf_files/wdsd_phase1_doc3.pdf
1960s
Context: One of my working assumptions which has been proven successful so often as seemingly to qualify it as a reliable tenet is that A problem adequately stated is a problem solved theoretically and immediately, and therefore subsequently to be solved, realistically. Others have probably stated the principle in many ways. The assumption is that the inevitability of a solution's realization is inherent in the interaction of human intellect and the constantly transformative evolution of physical universe. At first the, only subconsciously apprehended, approaching confluences of complex events make themselves known intuitively within the intellectual weather. Then comes a gradually awakening consciousness of the presence of new families of differentiating-out challenging concepts of every day prominence. It is with these randomly patterning families of separate concepts that evolution is about to deal integratively. As a now specific unitary problem it may be disposed of effectively when and if that unified problem becomes "adequately stated" and thereby comprehensibly solvable.

Mathematical Methods in Science (1977), p.164