No More Learning

Me from myself thy cruel eye hath taken,
And my next self thou harder hast engross'd:
Of him, myself, and thee I am forsaken;
A torment thrice three-fold thus to be cross'd:
Prison my heart in thy steel bosom's ward,
But then my friend's heart let my poor heart bail;
Whoe'er keeps me, let my heart be his guard;
Thou canst not then use rigour in my jail:
And yet thou wilt; for I, being pent in thee,
          am thine, and all that is in me.