"Man Proposes, But God Disposes"

Context: This is a book of advice to Christians on how to improve their souls and their relationship to God. This particular expression had been used earlier and widely, in the Chronicle of Battel Abbey (p. 27, Lower's translation), and in The Vision of Piers Plowman (Line 13994, edition of 1550). In Don Quixote, Part II (1615), Book IV, chapter 55, Cervantes said: "Man appoints, and God disappoints." In Proverbs 16:9, the reading is, "A man's heart deviseth his way; but the Lord directeth his steps." Thomas à Kempis says:

The purpose of righteous men hangeth
rather in the grace of God than
in man's own wisdom; in him
they trust always in all things they do.
For man purposeth and God disposeth;
and man's way is not in man (to carry out).