Veni, Creator Spiritus!

VENI, Creator Spiritus, mentes tuorum visita, imple superna gratia quae tu creasti pectora.	COME, Holy Spirit, Creator blest, and in our souls take up Thy rest; come with Thy grace and heavenly aid to fill the hearts which Thou hast made.
Qui diceris Paraclitus, altissimi donum Dei, fons vivus, ignis, caritas, et spiritalis unctio.	O comforter, to Thee we cry, O heavenly gift of God Most High, O fount of life and fire of love, and sweet anointing from above.
Tu, septiformis munere, digitus paternae dexterae, Tu rite promissum Patris, sermone ditans guttura.	Thou in Thy sevenfold gifts are known; Thou, finger of God's hand we own; Thou, promise of the Father, Thou Who dost the tongue with power imbue.
Accende lumen sensibus: infunde amorem cordibus: infirma nostri corporis virtute firmans perpeti.	Kindle our sense from above, and make our hearts o'erflow with love; with patience firm and virtue high the weakness of our flesh supply.
Hostem repellas longius, pacemque dones protinus: ductore sic te praevio vitemus omne noxium.	Far from us drive the foe we dread, and grant us Thy peace instead; so shall we not, with Thee for guide, turn from the path of life aside.
Per te sciamus da Patrem, noscamus atque Filium; Teque utriusque Spiritum credamus omni tempore.	Oh, may Thy grace on us bestow the Father and the Son to know; and Thee, through endless times confessed, of both the eternal Spirit blest.
Deo Patri sit gloria, et Filio, qui a mortuis surrexit, ac Paraclito, in saeculorum saecula. Amen.	Now to the Father and the Son, Who rose from death, be glory given, with Thou, O Holy Comforter, henceforth by all in earth and heaven. Amen.

http://www.preces-latinae.org/thesaurus/Hymni/VeniCreator.html

Come Holy Spirit

Come Holy Spirit, fill the hearts of your faithful and kindle in them the fire of your love.
V. Send forth your Spirit, and they shall be created.
R. And You shall renew the face of the earth.
Let us pray.
O, God, who by the light of the Holy Spirit, did instruct the hearts of the faithful, grant that by the same Holy Spirit we may be truly wise and ever enjoy His consolations. Through Christ Our Lord. Amen.

( One of the most widely used hymns in the Church, Veni, Creator Spiritus, is attributed to Rabanus Maurus (776-856). It is used at Vespers, Pentecost, Dedication of a Church, Confirmation, and Holy Orders and whenever the Holy Spirit is solemnly invoked. A partial indulgence is granted to the faithful who recite it. A plenary indulgence is granted if it is recited on January 1st or on the feast of Pentecost.)