“One side of the soul is carried away by the passionate part in man, and we are then captivated by the good things of this life, but the other side of the soul frequently delights in the activity of the intellect and, as a result, when we practice self-restraint, the intellect longs to pursue heavenly beauty.”

Wir haben nicht zuviel Verstand und zu wenig Seele, sondern wir haben zu wenig Verstand in den Fragen der Seele.
Helpless Europe (1922)

Cause, Principle, and Unity (1584)
Context: The universal Intellect is the intimate, most real, peculiar and powerful part of the soul of the world. This is the single whole which filleth the whole, illumineth the universe and directeth nature to the production of natural things, as our intellect with the congruous production of natural kinds.

Source: Areopagitica

The Choice http://poetry.poetryx.com/poems/1602/, st. 1
The Winding Stair and Other Poems (1933)

Cassandra (1860)
Context: Why have women passion, intellect, moral activity — these three — and a place in society where no one of the three can be exercised? Men say that God punishes for complaining. No, but men are angry with misery. They are irritated with women for not being happy. They take it as a personal offence. To God alone may women complain without insulting Him!

First Ennead, Book VI, as translated by Thomas Taylor, The Eleusinian and Bacchic Mysteries: A Dissertation https://books.google.com/books?id=vEt0LaOue8IC (1891) pp. 43-44.
The First Ennead (c. 250)

Untimely Thoughts (1917-18) (original: Наиболее успешно и могуче будит в нашей душе ее добрые начала сила искусства. Как наука является разумом мира, так искусство — сердце его.)
Context: The good qualities in our soul are most successfully and forcefully awakened by the power of art. Just as science is the intellect of the world, art is its soul.

As reported by Alexander Polyhistor, and Diogenes Laërtius in Lives and Opinions of Eminent Philosophers, "Pythagoras", Sect. 30, in the translation of C. D. Yonge (1853)