Chapter 10 - Henry Jekyll's full statement of the case
This is the letter that Jekyll left for Utterson in the laboratory (chapter 8).
He speaks about the duality of man, and his fascination with scientific discovery and how this morphed into a dark curiosity.
He first used the potion to explore this curiosity, then he began to turn into Hyde automatically without wanting to
It explores the idea of repression, and how Jekyll felt liberated by Hyde as he no longer had to repress his dual and immoral desires - he could explore them without consequence.
He speaks of how his sides of Jekyll and Hyde were inseparable and how they came from the same "womb of consciousness"