Music to hear, why hear'st thou music sadly? <br /> Sweets with sweets war not, joy delights in joy. <br /> Why lovest thou that which thou receivest not gladly, <br /> Or else receivest with pleasure thine annoy? <br /> If the true concord of well-tuned sounds, <br /> By unions married, do offend thine ear, <br /> They do but sweetly chide thee, who confounds <br /> In singleness the parts that thou shouldst bear. <br /> Mark how one string, sweet husband to another, <br /> Strikes each in each by mutual ordering, <br /> Resembling sire and child and happy mother <br /> Who all in one, one pleasing note do sing: <br /> Whose speechless song, being many, seeming one, <br /> Sings this to thee: 'thou single wilt prove none.'<br /><br />William Shakespeare<br /><br />http://www.poemhunter.com/poem/sonnet-viii-2/