The great ecclesial tradition has rightly separated sacramental efficacy from the concrete existential situation of the individual priest and so the legitimate expectations of the faithful are appropriately safeguarded. However, this correct doctrinal explanation takes nothing from the necessary, indeed indispensable, aspiration to moral perfection that must dwell in every authentically priestly heart.
Precisely to encourage priests in this striving for spiritual perfection on which, above all, the effectiveness of their ministry depends, I have decided to establish a special "Year for Priests" that will begin on 19 June and last until 19 June 2010. In fact, it is the 150th anniversary of the death of the Holy Curé d'Ars, John Mary Vianney, a true example of a pastor at the service of Christ's flock.
(Pope Benedict XVI, Address to the members of the Congregation for the Clergy)