The part about the eye and the heart

Darkest week of the semester  L  Sonnet 46:

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XLVI

  Mine eye and heart are at a mortal war,

  How to divide the conquest of thy sight;

  Mine eye my heart thy picture's sight would bar,

  My heart mine eye the freedom of that right.

  My heart doth plead that thou in him dost lie,--

  A closet never pierc'd with crystal eyes--

  But the defendant doth that plea deny,

  And says in him thy fair appearance lies.

  To side this title is impannelled

  A quest of thoughts, all tenants to the heart;

  And by their verdict is determined

  The clear eye's moiety, and the dear heart's part:

    As thus; mine eye's due is thy outward part,

    And my heart's right, thy inward love of heart.

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The volta’s the thus in the penultimate line.  The matter between the eye and the heart is to be continued in the next sonnet (tomorrow)—