“In the light of faith I gain wisdom in the wisdom of the Word your Son; in the light of faith I am strong, constant, persevering; in the light of faith I have hope: It does not let me faint along the way. This light teaches me the way, and without this light I would be walking in the dark. This is why I asked you, eternal Father, to enlighten me with the light of most holy faith.
Truly this light is a sea, for it nourishes the soul in you, peaceful sea, eternal Trinity. Its water is not sluggish; so the soul is not afraid because she knows the truth. It distills, revealing hidden things, so that here, where the most abundant light of your faith abounds, the soul has, as it were, a guarantee of what she believes. This water is a mirror in which you, eternal Trinity, grant me knowledge; for when I look into this mirror, holding it in the hand of love, it shows me myself, as your creation, in you, and you in me through the union you have brought about of the Godhead with our humanity.
This light shows you to me, and in this light I know you, highest and infinite Good: Good above every good, joyous Good, Good beyond measure and understanding! Beauty above all beauty; Wisdom above all wisdom—indeed you are wisdom itself! You who are the angels’ food are given to humans with burning love. You, garment who cover all nakedness, pasture the starving within your sweetness, for you are sweet without trace of bitterness.
O eternal Trinity, when I received with the light of most holy faith your light that you gave me, I came to know therein the way of great perfection, made smooth for me by so many wonderful explanations. Thus I may serve you in the light, not in the dark; and I may be a mirror of a good and holy life; and I may rouse myself from my wretched life in which, always through my own fault, I have served you in darkness. I did not know your truth, and so I did not love it. Why did I not know you? Because I did not see you with the glorious light of most holy faith, since the cloud of selfish love darkened the eye of my understanding. Then with your light, eternal Trinity, you dispelled the darkness.”
~St. Catherine of Siena (from The Dialogue)