"Who could refrain that had a heart to love and that heart courage to make loves note?"
-Macbeth

SONNET 56
Sweet love, renew thy force; be it not said
Thy edge should blunter be than appetite,
Which but to-day by feeding is allay'd,
To-morrow sharpen'd in his former might:
So, love, be thou; although to-day thou fill
Thy hungry eyes even till they wink with fullness,
To-morrow see again, and do not kill
The spirit of love with a perpetual dullness.
Let this sad interim like the ocean be*
Which parts the shore, where two contracted new
Come daily to the banks, that, when they see
Return of love, more blest may be the view;
Else call it winter, which being full of care
Makes summer's welcome thrice more wish'd, more rare.

In contemporary english:

Sweet love, renew your strength; let it not be said
That your power is weaker than the power of lust,
Lust which is satisfied today
But tomorrow will return even more intense,
So love, be with me, although today you fill
Your hungry eyes until, saturated, they close
Tomorrow open them again, and do not kill
The spirit of love or let it sink into boredom.
Let this sad interval be like the ocean
Which parts the shore, where two engaged lovers
Come daily to the sea-side, and when they see
The return of love, the view is even greater.
Or let this sad interval be like winter, which being full of anxiety
Makes summer's arrival all the more wonderful and rare.