Lat take a cat, and fostre him wel with milk,
And tendre flesh, and make his couche of silk,
And lat him seen a mous go by the wal;
Anon he weyveth milk, and flesh, and al,
And every deyntee that is in that hous,
Swich appetyt hath he to ete a mous.
Lo, here hath lust his dominacioun,
And appetyt flemeth discrecioun.

[Let’s take a cat, and foster him well with milk
And tender meat, and make his couch of silk,
And let him see a mouse go by the wall,
Right then he refuses milk and meat and all,
And every dainty that is in that house,
Such appetite has he to eat a mouse.
Lo, here has lust his domination,
And appetite drives away discretion.]

Geoffrey Chaucer (c. 1343-1400) English poet, philosopher, astronomer, diplomat

The Canterbury Tales, “The Manciple’s Tale,” l. 175ff (c. 1400)
    (Source)

Modern English. Alternate modernizations:

Let take a cat, and foster her with milk
And tender flesh, and make her couch of silk,
And let her see a mouse go by the wall,
Anon she weiveth milk, and flesh, and all,
And every dainty that is in that house,
Such appetite hath she to eat the mouse.
Lo, here hath kind her domination,
And appetite flemeth discretion.
[Source]

Let take a cat, and foster her with milk
And tender flesh, and make her couch of silk,
And let her see a mouse go by the wall,
Anon she forsaketh milk, and flesh, and all,
And every dainty that is in that house,
Such appetite hath she to eat the mouse.
Lo, here hath nature her domination,
And appetite drives out discretion.
[Source]