“If vacillation dwell with the heart the soul will rue it.”

Song lyrics, Children of the Sun (1969)

Une âme ... n'est pas faite pour habiter une chose ; quand elle y est contrainte, il n’est plus rien en elle qui ne souffre violence.
in The Simone Weil Reader, p. 155
Simone Weil : An Anthology (1986), The Iliad or The Poem of Force (1940-1941)

Zwey Seelen wohnen, ach! in meiner Brust.
Outside the Gate of the Town
Faust, Part 1 (1808)

And high understanding it is, inwardly to see and know that God, which is our Maker, dwelleth in our soul; and an higher understanding it is, inwardly to see and to know that our soul, that is made, dwelleth in God’s Substance: of which Substance, God, we are that we are.
And I saw no difference between God and our Substance: but as it were all God; and yet mine understanding took that our Substance is in God: that is to say, that God is God, and our Substance is a creature in God.
Summations, Chapter 54

Variant: A friend is one soul abiding in two bodies.
Variant: Love is composed of a single soul inhabiting two bodies.
Source: The Lives and Opinions of Eminent Philosophers, p. 188; also reported in various sources as:
Friendship is a single soul dwelling in two bodies.
A true friend is one soul in two bodies.
Love is composed of a single soul inhabiting two bodies.
What is a friend? A single soul dwelling in two bodies.

Dedication, later published as "A Prayer in Time of War"
A Belgian Christmas Eve (1915)
Context: p>Grant us the single heart once more
That mocks no sacred thing,
The Sword of Truth our fathers wore
When Thou wast Lord and King. Let darkness unto darkness tell
Our deep unspoken prayer;
For, while our souls in darkness dwell,
We know that Thou art there.</p

Source: 1800s, Auguries of Innocence (1803), Line 129