Conscience.

PEace pratler, do not lowre:
Not a fair look, but thou dost call it foul:
Not a sweet dish, but thou dost call it sowre:
Musick to thee doth howl.
By listning to thy chatting fears
I have both lost mine eyes and eares.

Pratler, no more, I say:
My thoughts must work, but like a noiselesse sphere;
Harmonious peace must rock them all the day:
No room for pratlers there.
If thou persistest, I will tell thee,
That I have physick to expell thee.

And the receit shall be
My Saviours bloud: when ever at his board
I do but taste it, straight it cleanseth me,
And leaves thee not a word;
No, not a tooth or nail to scratch,
And at my actions carp, or catch.

Yet if thou talkest still,
Besides my physick, know there's some for thee:
Some wood and nails to make a staffe or bill
For those that trouble me:
The bloudie crosse of my deare Lord
Is both my physick and my sword.