Note how they conflate personality with physical features. Subsequent sections of the verse go on to describe physical symptoms of illnesses attributed to excess of each humour.
Complexions cannot virtue breed or vice,
Yet may they unto both give inclination.
The Sanguin gamesome is, and nothing nice,*
Loves wine, and women, and all recreation.
Likes pleasant tales, and news, plays cards and dice,
Fit for all company, and every fashion :
Though bold, not apt to take offence, nor ireful,
But bountiful and kind, and looking cheerful :
Inclining to be fat and prone to laughter,
Loves mirth, and music, cares not what comes after.
Sharpe Chollcr is an humour most pernitious,
All violent, and fierce, and full of fire,
Of quick conceit, and there withal ambitious.
Their thoughts to greater fortune still aspire,
Proud, bountiful enough, yet oft malicious,
A right bold speaker, and as bold a liar,
On little cause to anger great inclined,
Much eating still, yet ever looking pin’d.
In younger years they use to grow apace.
In elder, hairy on their breast and face.
The Flegmatique are most of no great growth,
Inclining rather to be fat and square,
Given much unto their ease, to rest and sloth.
Content in knowledge to take little share,
To put themselves to any pain most loth.
So dead their spirits, so dull their senses are :
Still either sitting like to folk that dream,
Or else still spitting, to avoid the flegme,
One quality doth yet these harms repair,
That for most part the Flegmatique are fair
The Melancholy from the rest do vary,
Both sport, and ease, and company refusing,
Exceeding studious, ever solitary,
Inclining pensive still to be, and musing,
A secret hate to others apt to carry:
Most constant in his choice, tho long a choosing,
Extreme in love sometime, yet seldom lustful,
Suspitious in his nature, and mistrustful,
A wary wit, a hand much given to sparing,
A heavy look, a spirit little daring-
*Nice used to mean ‘ignorant/foolish’, then came to mean ‘finicky, very particular’. I suspect the latter meaning in this context. The Sanguine is gameson and not very particular or finicky.