Or, those who sell in the Church, are those who seek their own, not the things of Jesus Christ. They who will not be bought, think they may sell earthly things. Thus Simon wished to buy the Spirit, that he might sell Him: for he was one of those who sell doves. (The Holy Spirit appeared in the form of a dove.) The dove however is not sold, but is given of free grace1; for it is called grace.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Tr. x. c. 6