The Four Bs: Brain, Balls, Brawn, and Business Sense.

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You can have 4 out of 4 (Thales), 3 out of 4 (Plato, who had poor practical sense), 2 out of 4 (most great scientists and great businesspersons), 1 out of 4 (the typical “incremental” modern academics, or people you tend to find in jail), or 0 out of 4 (journalists).

(Exception for journalists who take personal risks, of course. Also the “balls” tends to be present in women at least as often as in men).

via The Four Bs: Brain, Balls, Brawn, and Business… – Nassim Nicholas Taleb.