I have often pondered over the roles of knowledge or experience, on the one hand, and imagination or intuition, on the other, in the process of discovery. I believe that there is a certain fundamental conflict between the two, and knowledge, by advocating caution, tends to inhibit the flight of imagination. Therefore, a certain naiveté, unburdened by conventional wisdom, can sometimes be a positive asset.
Harish-Chandra, cited in: Robert Langlands, "Harish-Chandra. 11 October 1923-16 October 1983.", in: Biographical Memoirs of Fellows of the Royal Society of London, 31 (1985), 199-225.