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It seems that if one is working from the point of view of getting beauty in one's equations, and if one has really a sound insight, one is on a sure line of progress.

"The Evolution of the Physicist's Picture of Nature" by Paul Dirac, blogs.scientificamerican.com. June 25, 2010.
It seems that if one is working from the point of view of getting beauty in one's equations, and if one has really a sound insight, one is on a sure line of progress.