And yit for mannes sustenance,
To kepe and holde in governance, 650
To him that wole his hele gete
Is non so good as comun mete:
For who that loketh on the bokes,[772]
It seith, confeccion of cokes,
A man him scholde wel avise
Hou he it toke and in what wise.
For who that useth that he knoweth,
Ful selden seknesse on him groweth,