Jeremy Grantham is quoted always from Investment commentators/analysts/writers/investors.
I was reading Barton Biggs (ex Morgan Stanley) in the current Bulletin magazine and Grantham is mentioned as was he in his book.
If you do get a chance to read him, this guy is disciplined and sharp. If you want to invest with GMO, have a cool $10m+ and walk to their bunker offices in pyrmont.