Drink water like an ox, wine like a king of Spain.

The ox suggests that water can be drunk in hearty quantities. The royal image gives wine a different measure: it is to be enjoyed with restraint.

The proverb contrasts freedom with self-control, not two kinds of excess. It allows a generous thirst for water while urging a more measured approach to wine.

Use the saying as advice about drinking: there is no need to stint on water, but wine calls for moderation. It can also gently caution someone against having too much wine.