Sonnets from the Portuguese iv

IF thou must love me, let it be for naught
Except for love's sake only. Do not say,
'I love her for her smile--her look--her way

Of speaking gently,--for a trick of thought

That falls in well with mine, and certes brought
A sense of pleasant ease on such a day'-For
these things in themselves, Beloved, may

Be changed, or change for thee--and love, so wrought,
May be unwrought so. Neither love me for
Thine own dear pity's wiping my cheeks dry:
A creature might forget to weep, who bore
Thy comfort long, and lose thy love thereby!
But love me for love's sake, that evermore
Thou mayst love on, through love's eternity.