St Hilary, Bishop and Doctor
The salt of the earth, this light on God's house, would not suffer, under the false excuse of favouring peace and unity, the salt of true doctrine to be corrupted or the light of truth to be hidden under a bushel. "Having thus taught the practice of the commandments even to the last tittle, he is great in the kingdom of heaven" (Gospel), and the Church which is the earthly portion of this kingdom has, by the voice of Pope Pius IX, awarded him the title of Doctor of the Church. He died in 368.
Let us have recourse to the intercession of St Hilary in order always to be the intrepid defenders of the divinity of Christ.
In medio Ecclesiae aperuit os ejus: et implevit eum Dominus spiritu sapientiae et intellectus: stolam gloriae induit eum. * Bonum est confiteri Domino: et psallere nomini tuo, Altissime.
In the midst of the Church the Lord opened his mouth: and He filled him with the spirit of wisdom and understanding: He clothed him with a robe of glory. * It is good to give praise to the Lord: and to sing to Thy name, O most High.
(Ecclesiasticus 15:5 and Psalm 91:2 from the Introit of Mass)
Deus, qui pópulo tuo aetérnae salútis beátum Hilarium minístrum tribuísti: praesta quaesumus; ut, quem Doctórem vitae habúimus in terris, intercessórem habére mereámur in coelis.
O God, who didst give unto Thy people blessed Hilary to be a minister of eternal salvation: grant, we beseech Thee, that we may be worthy to have as an intercessor in heaven him, whom we have had as teacher of life on earth.
Catholic Encyclopaedia on St Hilary of Poitiers: http://www.newadvent.org/cathen/07349b.htm