Caelestius, when charged with heresy,
had presented a libellus or booklet to Pope Zosimus, in which he not
only declared his faith but listed points in which he was till in doubt about
which he wished Zosimus to instruct him. Among these latter matters was the
existence of original sin. Pope Zosimus said that his booklet was Catholic,
meaning that his humble attitude of submission to magisterial authority was a
properly Catholic attitude. In Caelestius, as a matter of fact, it was a
feigned attitude; and he gave it out that Zosimus had declared the booklet,
with its doubts and heresies, of Catholic content. (William A. Jurgens, The
Faith of the Early Fathers, 3 vols. [Collegeville, Minn.: The Liturgical
Press, 1979], 3:142 n. 8)