“The Logos, in truth, is the light of God, but the ignorant soul is darkness. On this account, if it continues solitary, it tends downward towards matter, and dies with the flesh; but, if it enters into union with the Divine Spirit, it is no longer helpless, but ascends to the regions whither the Spirit guides it: for the dwelling-place of the spirit is above, but the origin of the soul is from beneath. Now, in the beginning the spirit was a constant companion of the soul, but the spirit forsook it because it was not willing to follow.”

Eye to Eye: The Quest for the New Paradigm (1984)

Note to Stanza 28 part 3
Spiritual Canticle of The Soul and The Bridegroom, Notes to the Stanzas
Context: When the soul, then, in any degree possesses the spirit of solitary love, we must not interfere with it. We should inflict a grievous wrong upon it, and upon the Church also, if we were to occupy it, were it only for a moment, in exterior or active duties, however important they might be. When God Himself adjures all not to waken it from its love, who shall venture to do so, and be blameless? In a word, it is for this love that we are all created. Let those men of zeal, who think by their preaching and exterior works to convert the world, consider that they would be much more edifying to the Church, and more pleasing unto God — setting aside the good example they would give if they would spend at least one half their time in prayer, even though they may have not attained to the state of unitive love.

When the divine heat of love has drawn out all the moisture, heaviness, unfitness, then this holy food plunges such a one into the life of God. As Our Lord himself said to St Augustine, "I am the food of the strong: believe and feast on me. You will not change me into yourself; rather you will be changed into me".
Sermons, From Our Daily Bread

Source: The Interpretation of Dreams

1960s, Why Jesus Called A Man A Fool (1967)
Context: I don’t mind telling you this morning that sometimes I feel discouraged. I felt discouraged in Chicago. As I move through Mississippi and Georgia and Alabama, I feel discouraged. Living every day under the threat of death, I feel discouraged sometimes. Living every day under extensive criticisms, even from Negroes, I feel discouraged sometimes. Yes, sometimes I feel discouraged and feel my work’s in vain. But then the Holy Spirit revives my soul again.

Sermon VII : Outward and Inward Morality
Meister Eckhart’s Sermons (1909)
Context: Grace is from God, and works in the depth of the soul whose powers it employs. It is a light which issues forth to do service under the guidance of the Spirit. The Divine Light permeates the soul, and lifts it above the turmoil of temporal things to rest in God. The soul cannot progress except with the light which God has given it as a nuptial gift; love works the likeness of God into the soul. The peace, freedom and blessedness of all souls consist in their abiding in God's will. Towards this union with God for which it is created the soul strives perpetually.

Letter to Juana Gratia (1857)

Xenophanes, 3.
The Lives and Opinions of Eminent Philosophers (c. 200 A.D.), Book 9: Uncategorized philosophers and Skeptics