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• Gradually I began to intellectually reject some of the delusionally influenced lines of thinking which had been characteristic of my orientation. This began, most recognizably, with the rejection of politically-oriented thinking as essentially a hopeless waste of intellectual effort.
  • Autobiographical essay in Les Prix Nobel - The Nobel Prizes 1994 (1995) edited by Tore Frängsmyr

• At the present time I seem to be thinking rationally again in the style that is characteristic of scientists. However this is not entirely a matter of joy as if someone returned from physical disability to good physical health. One aspect of this is that rationality of thought imposes a limit on a person's concept of his relation to the cosmos.
  • Autobiographical essay in Les Prix Nobel - The Nobel Prizes 1994 (1995) edited by Tore Frängsmyr

• Statistically, it would seem improbable that any mathematician or scientist, at the age of 66, would be able through continued research efforts, to add much to his or her previous achievements. However I am still making the effort and it is conceivable that with the gap period of about 25 years of partially deluded thinking providing a sort of vacation my situation may be atypical. Thus I have hopes of being able to achieve something of value through my current studies or with any new ideas that come in the future.
  • Autobiographical essay in Les Prix Nobel - The Nobel Prizes 1994 (1995) edited by Tore Frängsmyr