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Duality and repression are the core themes of The Strange Case of Dr Jekyll and Mr Hyde. Understanding how Stevenson explores them — and connecting them to Victorian context — is essential for a top-grade response.
Duality means the existence of two opposing parts within a single entity. In Jekyll and Hyde, duality operates on multiple levels:
| Level | Example |
|---|---|
| Individual | Jekyll contains both good and evil |
| Physical | Jekyll's house has a respectable front and a sinister back |
| Urban | London has grand squares and dark alleyways |
| Social | Victorian society demands respectability but harbours vice |
| Scientific/moral | Science can enlighten or destroy |
Jekyll's central discovery is expressed in one of the novella's most important quotes:
"I learned to recognise the thorough and primitive duality of man." (10)
He comes to believe that every person is not one but two — containing both a moral, civilised self and a primitive, evil self.
"man is not truly one, but truly two" (10)
Jekyll even speculates that humans might contain multiple selves:
"I say two, because the state of my own knowledge does not pass beyond that point." (10)
Stevenson weaves duality into every aspect of the novella:
| Setting | Respectable side | Dark side |
|---|---|---|
| Jekyll's house | Grand front door, square | Blistered back door, by-street |
| London | Well-lit, prosperous streets | Foggy, sinister alleyways |
| Jekyll's rooms | Elegant dining room | The locked, secretive laboratory |
Stevenson repeatedly uses contrasting pairs:
| Light / dark | Good / evil | Civilised / primitive |
|---|---|---|
| "Stars" vs "darkness" | Jekyll vs Hyde | Doctor vs "troglodyte" |
| Day vs night | Respectability vs vice | Rational speech vs "ape-like fury" |
The novella itself is dual — the story told from the outside (Utterson's investigation) and the story told from the inside (Jekyll's confession). The reader must combine both perspectives to understand the truth.
Examiner's tip: When writing about duality, don't just say "the novella explores duality." Be specific about how — through settings, characters, language, and structure. A Grade 9 response would analyse duality at multiple levels simultaneously.
Duality was a major preoccupation of Victorian culture:
The novella was shocking because it suggested that the beast was not "out there" in the slums or the colonies — it was inside every respectable gentleman.
Repression is the act of suppressing desires, emotions, or aspects of the self that are considered unacceptable. In Victorian society, repression was not just common — it was expected.
| What is repressed? | By whom? | Consequence |
|---|---|---|
| Jekyll's "pleasures" | Jekyll himself | Creates unbearable tension — leads to the experiment |
| Utterson's enjoyment | Utterson | He denies himself theatre, wine — lives an austere life |
| The truth about Hyde | All characters | No one investigates fully — they protect reputation |
| Emotions and horror | Utterson, Enfield | They walk away in silence after witnessing Jekyll's transformation at the window |
| Jekyll's confession | Sealed letters | Truth is literally locked away, only revealed after death |
Jekyll is the novella's most important example of repression. In his confession, he explains:
"I concealed my pleasures." (10)
"I found it hard to reconcile with my imperious desire to carry my head high, and wear a more than commonly grave countenance before the public." (10)
Jekyll does not say his pleasures were criminal or even particularly wicked. He says they were incompatible with his reputation. This is Stevenson's critique of Victorian society — it is the system that creates the need for Hyde, not Jekyll's evil nature.
Stevenson shows that repression does not eliminate evil — it strengthens it:
Repression → Pressure builds → Explosion (Hyde) → Escalation → Destruction
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