Ph.D = “piled higher and deeper” and the vast majority that I know have ivory-tower-itis so bad, they don't know how to change a tire, relax on a float trip or keep score at a baseball game.
I know a Ph.D principal of an upscale, Chicago area high school who doesn't know the meaning of
pyromaniac and referred repeatedly to the skinny, just-planted trees around his house as "samplings." Inside his house, there are no books. No books!
Intellectual is too often used to describe one who is merely educated. Anyone can can buy a formal "education" but true intelligence can't be bought.