God not only provides for men's necessity... but that in his goodness he deals still more bountifully with them by cheering their hearts with wine. It is lawful to use wine not only in cases of necessity but also thereby to make us merry.
¶ Commentary on the Psalms, Psalm 104:15 (1557)
http://www.ccel.org/ccel/calvin/calcom11.all.html#xiii.iii
