What win I, if I gain the thing I seek? A dream, a breath, a...

What win I, if I gain the thing I seek? A dream, a breath, a froth of fleeting joy. Who buys a minute's mirth to wail a week? Or sells eternity to get a toy? For one sweet grape who will the vine destroy? Or what fond beggar, but to touch the crown, Would with the sceptre straight be strucken down?