“He is in my soul and i am in his, and we are in bed but we are in a desert, and i do not know where he begins and i end - Mac”

Variant: You are my courage, as I am your conscience," he whispered. "You are my heart---and I your compassion. We are neither of us whole, alone. Do ye not know that, Sassenach?
Source: Drums of Autumn

"Death with Dignity"
Lyrics, Carrie and Lowell (2015)

Source: Water Babies http://www.gutenberg.org/dirs/etext97/wtrbs10h.htm (1863), Ch. 5.

Source: Ever After

On the work of the metal-smith Tubal-Cain
The Legend of Jubal (1869)
Context: Each day he wrought and better than he planned,
Shape breeding shape beneath his restless hand.
(The soul without still helps the soul within,
And its deft magic ends what we begin.)
Nay, in his dreams his hammer he would wield
And seem to see a myriad types revealed,
Then spring with wondering triumphant cry,
And, lest the inspiring vision should go by,
Would rush to labor with that plastic zeal
Which all the passion of our life can steal
For force to work with. Each day saw the birth
Of various forms, which, flung upon the earth,
Seemed harmless toys to cheat the exacting hour,
But were as seeds instinct with hidden power.

Source: Wuthering Heights

The Man With the Blue Guitar (1937)

Blue Like Jazz (2003, Nelson Books)