Original: Lastly do I make this vow, that mine eyes desire you above all things.
It’s easy to see where this might be confused with Shakespeare. It’s actually from a very famous romantic letter written by Katharine of Aragon dated January 1536:
My most dear lord, king and husband,
The hour of my death now drawing on, the tender love I owe you forceth me, my case being such, to commend myself to you, and to put you in remembrance with a few words of the health and safeguard of your soul which you ought to prefer before all worldly matters, and before the care and pampering of your body, for the which you have cast me into many calamities and yourself into many troubles. For my part, I pardon you everything, and I wish to devoutly pray God that He will pardon you also. For the rest, I commend unto you our daughter Mary, beseeching you to be a good father unto her, as I have heretofore desired. I entreat you also, on behalf of my maids, to give them marriage portions, which is not much, they being but three. For all my other servants I solicit the wages due them, and a year more, lest they be unprovided for. Lastly, I make this vow, that mine eyes desire you above all things.
Katharine the Quene.
Katharine, of course, is a character in Shakespeare’s play about Henry VIII. But even if Shakespeare did copy that quote directly into the play (and I can’t find evidence that he did), the real Katharine apparently said it first.