7 Many see a difficulty in the fact that in the present discipline concerning celibacy the gift of a vocation to the priesthood is identified with that of perfect chastity as a state of life for God's ministers. And so people ask whether it is right to exclude from the priesthood those who, it is claimed, have been called to the ministry without having been called to lead a celibate life.
Source: Sacerdotalis Caelibatus (Vatican.va)