Shakespeare nailed it:
Let me have men about me that are fat;ANTONY CAESAR
Sleek-headed men and such as sleep o' nights:
Yon Cassius has a lean and hungry look;
He thinks too much: such men are dangerous.
Would he were fatter! But I fear him not:Picture American citizens as Caesar.
Yet if my name were liable to fear,
I do not know the man I should avoid
So soon as that spare Cassius. He reads much;
He is a great observer and he looks
Quite through the deeds of men: he loves no plays,
As thou dost, Antony; he hears no music;
Seldom he smiles, and smiles in such a sort
As if he mock'd himself and scorn'd his spirit
That could be moved to smile at any thing.
Such men as he be never at heart's ease
Whiles they behold a greater than themselves,
And therefore are they very dangerous.
I rather tell thee what is to be fear'd
Than what I fear; for always I am Caesar.
Kind of interesting, isn't it?