Name the authors of the following poems and then make a comparative analysis of them.

"AMORETTI, SONNET 75" One day I wrote her name upon the strand, But came the waves and washed it away: Again I write it with a second hand, But came the tide, and made my pains his prey. Vain man, said she, that doest in vain assay, A mortal thing so to immortalize, For I myself shall like to this decay, And eek my name be wiped out likewise. Not so, (quod I) let baser things devise To die in dust, but you shall live by fame; My verse, your virtues rare shall eternize, And in the heavens write your glorious name. Where whenas death shall all the world subdue, Our love shall live, and later life renew. "Sonnet 18" Shall I compare thee to a summer s day？ Thou art more lovely and more temperate; Rough winds do shake the darling buds of May, And summer s lease hath all too short a date; Sometime too hot the eye of heaven shines, And often is his gold complexion dimmed, And every fair from fair sometime declines, By chance, or nature s changing course untrimmed: But thy eternal summer shall not fade, Nor lose possession of that fair thou ow st, Nor shall death brag thou wander st in his shade, When in eternal lines to time thou grow st, So long as men can breathe, or eyes can see, So long lives this, and this gives life to thee.