Read it through once

Duke. Sir Thurio, giue vs leaue (I pray) a while, We haue some secrets to confer about. Now tell me Protheus, what's your will with me? Pro. My gracious Lord, that which I wold discouer, The Law of friendship bids me to conceale, But when I call to minde your gracious fauours Done to me (vndeseruing as I am) My dutie pricks me on to vtter that Which else, no worldly good should draw from me: Know (worthy Prince) Sir Valentine my friend This night intends to steale away your daughter: My selfe am one made priuy to the plot. I know you haue determin'd to bestow her On Thurio, whom your gentle daughter hates, And should she thus be stolne away from you, It would be much vexation to your age. Thus (for my duties sake) I rather chose To crosse my friend in his intended drift, Then (by concealing it) heap on your head A pack of sorrowes, which would presse you downe (Being vnpreuented) to your timelesse graue