Philosophers and haircuts

Charles Moore covers familiar ground here with respect to the atheism vs. religion debate, but proffers an interesting description of Professor A. C. Grayling as having "that big mane of swept-back hair which says 'philosopher' just as clearly as a pinstripe suit used until recently to say 'Tory'."

Is this really true? Certainly, Bertrand Russell also sported an interesting follicular sweep at times. With Wittgenstein it was more the look of madness which grabbed your attention; eyes which have seen into the dungeon dimensions.