Theme: Duality & Identity

English LiteratureAQAGCSEUnit: The Strange Case of Dr Jekyll and Mr Hyde
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The basics

One Man, Two Names

📖 One Man, Two Names

Jekyll's experiment begins with a thesis: "man is not truly one, but truly two." He believes the two selves can be separated — that respectability and impulse can each live cleanly, without contaminating the other.

Stevenson spends ten chapters proving him catastrophically wrong.

By the end, both Jekyll and Hyde are dead. The two selves, forced apart, destroyed each other. Stevenson's answer to Jekyll's thesis is the novella itself.

Spotlight
Stage 1: THE THESIS (Chapters 1-4)

Jekyll articulates his theory in Chapter 10's full statement: "Man is not truly one, but truly two." The duality is not personal — he states it as a universal claim about all humans: "all human beings, as we meet them, are commingled out of good and evil." The experiment is an attempt to SEPARATE what is naturally comb

Exam tip

Earn the mark scheme marks

🧠 Duality's Trajectory in Three Words

THESIS → COLLAPSE → VERDICT

Thesis: "Man is not truly one, but truly two" — Jekyll's confident claim; the experiment as Victorian science. Collapse: involuntary transformations; "slowly losing hold" — the selves cannot be kept separate. Verdict: both die; "doomed to such a dreadful shipwreck" — Stevenson refuses resolution. Remember: Stevenson is not arguing that duality is unusual. He is arguing that it is universal.

Now try it yourself

Quiz · Question 1 of 10

Which of the following is Jekyll's central thesis about human nature, as stated in Chapter 10?

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