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
Assuredly there is but one way in which to achieve what is not merely difficult but utterly against human nature: to love those who hate us, to repay their evil deeds with benefits, to return blessings for reproaches. It is that we remember not to consider men's evil intention but to look upon the image of God in them, which cancels and effaces their transgressions, and with its beauty and dignity allures us to love and embrace them.
¶ The Institutes of the Christian Religion (1536)
But those who wish to prove to unbelievers that Scripture is the Word of God are acting foolishly, for only by faith can this be known.
¶ The Institutes of the Christian Religion (1536)
