The prerequisite of contrapuntal art, more conspicuous in the work of Bach than in that of any other composer, is an ability to conceive a priori of … - Glenn Gould

The mental imagery involved with pianistic tactilia is not related to the striking of individual keys but rather to the rites of passage between notes.

I wasn't motivated to do it [re-record Bach's Goldberg Variations] until rather recently, when it occurred to me, on one of my rare relistenings to that early recording, that it was very nice, but that it was perhaps a little bit like thirty very interesting but somewhat independent-minded pieces, going their own way, and all making a comment on the ground bass on which they are all formed and to which they all conform. And I suddenly felt, not having played it in, well, since I stopped playing concerts, about 20 years, having not played it in all that time, that maybe I wasn't savaged by any over-exposure to it, and that if I looked at it again, I could find a way of making some sort of almost arithmetical correspondence between the theme and the subsequent variations, so that there would be some sort of temporal relationship, I don't want to say just exactly 2, 4, 8, 16, 32, that kind of correspondence, but, you know what I mean, there would be a sense in which, substituting for the fact that Bach had absolutely no melodic design that is continuous but rather a base harmonic design that is continuous, there would be at least a rhythmic design that is continuous, and the sense of pulse that went through it. And that seemed to me sufficient justification [...] to do it all over again.

Never be clever for the sake of being clever
For the sake of showing off.