Luther

“You say you don't baptize children because they don't believe. Why do you preach the Word to adults who don't believe, unless perhaps in the hope that they may believe? You do it on the strength of God's command alone. For if you baptize me because I say I believe, and you baptize on account of me and in my name. Therefore, since you don't know whether I believe or don't believe, it is only because of God's command. It isn't necessary to exclude children, since as a rule you baptize all, whether they believe or not.

…, and that his faith and salvation be committed to God's keeping.” Martin Luther, Tabletalk, Dietrich #549, summer or fall 1533, LW, AE, 54:98-99