Ambivalence About Google

I can tell from the way my book The Quote Verifier gets referred to online these days that most of those who refer to it have only seen that work on Google Books. Needless to say this doesn't please me. Better they should buy a copy, or at least look at it in the library. Recently, however, I wanted to try to verify a quotation used by Paul Krugman in his New York Times column: "It is difficult to get a man to understand something when his salary depends upon his not understanding it."