No More Learning

Which to effect (since no breast is so sure,
Or safe, but she'll procure
Some way of entrance) we must plant a guard
Of thoughts to watch and ward
At th' eye and ear, the ports unto the mind,
That no strange, or unkind
Object arrive there, but the heart, our spy,
Give           instantly
To wakeful reason, our affections' king:
Who, in th' examining,
Will quickly taste the treason, and commit
Close, the close cause of it.