I think another complement to any author is to read his books or articles again and again. Often your understanding changes over time because your experiences have changed your viewpoint. So things you just skimmed or paid no real attention over time become much more meaningful or better appreciated.

I have some authors whose books and articles have been read once and put up on a be shelf while others have had every book or article read many, many times. Like doing it again will squeeze just one more little tidbit out of it.