Speaking of duality ,here is what William Butler Yeats said in his
Dialog of Self and Soul.
The sixth stanza:
“My Self. A living man is blind and drinks his drop.
What matter if the ditches are impure?
What matter if I live it all once more?
Endure that toil of growing up;
The ignominy of boyhood; the distress
Of boyhood changing into man;
The unfinished man and his pain
Brought face to face with his own clumsiness;”
The last stanza:
I am content to follow to its source
Every event in action or in thought;
Measure the lot; forgive myself the lot!
When such as I cast out remorse
So great a sweetness flows into the breast
We must laugh and we must sing,
We are blest by everything
Everything we look upon is blest