Read it through once

TITUS. ’Tis sure enough, an you knew how. But if you hunt these bear-whelps, then beware; The dam will wake, and if she wind you once. She’s with the lion deeply still in league, And lulls him whilst she playeth on her back, And when he sleeps will she do what she list. You are a young huntsman, Marcus; let alone; And come, I will go get a leaf of brass, And with a gad of steel will write these words, And lay it by. The angry northern wind Will blow these sands like Sibyl’s leaves abroad, And where’s our lesson, then? Boy, what say you?