I remember I read the quote in my subject line many years ago, when I first got interested in the game. I think the author was trying to make several points at once:
first, that the real goal of a go player is mastery of the game, not the defeat of the opponent;
second, and consequently, that you really master the game when you are so much in control that you can make it end with exactly the score you want;
third, that keeping the two players’ scores as close as possible during the game is as important as coming out on top;
fourth, and relatedly, that making more points than necessary is a form of disrespect;
and so on…
The problem is that I don’t remember where I read it. Does anyone? Is it from Kawabata’s Master of Go, perhaps?