To One demanding why Wine sparkles.
So diamonds sparkle, and thy mistress' eyes;
When 'tis not fire but light in either flies.
Beauty not thaw'd by lustful flames will show
Like a fair mountain of unmelted snow:
Nor can the tasted vine more danger bring
Than water taken from the crystal spring,
Whose end is to refresh and cool that heat
Which unallay'd becomes foul vice's seat: