# Drink Only Water for your purity. I'm also doing it. it makes me really frugal. Anc ient Greek philosophers usually did it often with vegetarianism. Also, since Greek philosophy heavily influenced Thoreau, you can f ind it on Walden too. > I am glad to have drunk water so long, for the same reason that > I prefer the natural sky to an opium-eater's heaven. I would fai > n keep sober always; and there are infinite degrees of drunkenne > ss. I believe that water is the only drink for a wise man; wine > is not so noble a liquor; and think of dashing the hopes of a mo > rning with a cup of warm coffee, or of an evening with a dish of > tea! Ah, how low I fall when I am tempted by them! > > Henry David Thoreau, "Walden"