"The trouble begins when we start to be so impressed by the strategies of our systematized thought that we forget that it does relate to an obverse, that it is hewn from negation, that it is but very small security against the void of negation which surrounds it. And when that happens, when we forget these things, all sorts of mechanical failures begin to disrupt the functions of the human personality. When people who practice an art like music become captives of those positive assumptions of system, when they forget to credit that happening against negation which system is, and when they become disrespectful of the immensity of negation compared to system — then they put themselves out of reach of that replenishment of invention upon which creative ideas depend, because invention is, in fact, a cautious dipping into the negation that lies outside system from a position firmly ensconced in system."

“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 melodic identities which when transposed, inverted, made retrograde, or transformed rhythmically will yet exhibit, in conjunction with the original subject matter, some entirely new but completely harmonious profile.”

“I wasn't motivated to do it 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.”

“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 think that if I were required to spend the rest of my life on a desert island, and to listen to or play the music of any one composer during all that time, that composer would almost certainly be Bach. I really can't think of any other music which is so all-encompassing, which moves me so deeply and so consistently, and which, to use a rather imprecise word, is valuable beyond all of its skill and brilliance for something more meaningful than that -- its humanity.”

“I believe that the justification of art is the internal combustion it ignites in the hearts of men and not its shallow, externalized, public manifestations. The purpose of art is not the release of a momentary ejection of adrenalin but is, rather, the gradual, lifelong construction of a state of wonder and serenity.”

“I tend to follow a very nocturnal sort of existence mainly because I don't much care for sunlight. Bright colors of any kind depress me, in fact. And my moods are more or less inversely related to the clarity of the sky, on any given day. A matter of fact, my private motto has always been that behind every silver lining there is a cloud.”