Transcendental Medicine: Jekyll's science moves beyond the physical and into the metaphysical or 'mystical.' He uses chemistry to manipulate the soul, a boundary-crossing act that challenges the traditional, rational science of his peers.
The Hubris of the Creator: The theme explores the dangers of scientific discovery when divorced from moral responsibility. Jekyll's belief that he can control the laws of nature leads to his downfall, serving as a cautionary tale about 'playing God.'
Materialism vs. Mysticism: The conflict between Dr. Lanyon and Dr. Jekyll represents the tension between traditional, evidence-based science and radical, speculative experimentation. Lanyon's physical shock at Hyde's transformation symbolizes the total collapse of rationalism when faced with the supernatural.
| Feature | Dr. Henry Jekyll | Mr. Edward Hyde |
|---|---|---|
| Social Status | Respected, wealthy, influential | Outcast, loathed, mysterious |
| Physicality | Large, handsome, well-proportioned | Small, deformed, 'troglodytic' |
| Moral State | A mix of virtue and hidden vice | Pure, unadulterated evil |
| Symbolism | The constraints of civilization | The freedom of primitive impulse |
Analyze the Setting: Always link the physical environment to the internal themes. For example, the 'back door' used by Hyde is neglected and blistered, symbolizing the decay of Jekyll's secret life, while the front door remains polished and respectable.
Identify the Unreliable Narrator: Consider how the themes are filtered through the perspectives of Utterson and Lanyon. Their refusal to accept the supernatural initially highlights the theme of Victorian denial.
Trace the Power Shift: In essays, track how the balance of power shifts from Jekyll to Hyde. This progression illustrates the theme that once the 'beast' is unleashed, it cannot be easily recaged or controlled.
Look for Symbols of Duality: Use objects like the mirror, the potion, and the walking stick as evidence of the split between the characters' public and private identities.