True contemplative prayer…

Even in the act of true contemplative prayer, it is well to remember these strong words of Saint Paul’s: “If I speak in the tongues of mortals and of angels, but do not have love, I am a noisy gong or a clanging cymbal. And if I have prophetic powers, and understand all mysteries and all knowledge, and if I have all faith, so as to remove mountains, but do not have love, I am nothing.” (1 Cor 13:1–2). It is therefore essential that anyone who… is called to a contemplative life should take more care than anyone else that his prayer be a work of love, and that it be an authentic and living one.
–René Voillaume (1905–2003)

By vehement desire…

The grace of contemplation is granted only in response to a longing an importunate (burning) desire: Nevertheless, God will not present Himself, even in passing, to every soul; but only to that soul which is shown, by great devotion, vehement desire, and tender affection, to be His bride, and to be worthy that the Word in all His beauty should visit her as a Bridegroom.
–Saint Bernard of Clairvaux (1090-1153)

Contemplation to become prayer…

It is of paramount importance— we must repeat this— for contemplation to become prayer. The worshiper must reach out to the living God, must become aware of His holy presence, must seek out His holy countenance and enter into His heart. Contemplation should become a real dialogue in which man’s I faces its true Thou, which is God.
–Roman Guardini (1885-1968)