The philosophy survives in correspondence
Her views are developed through questions and exchanges, making it risky to force them into a single finished system detached from their context.
Early modern philosophy · 1618–1680
Elisabeth forces Cartesian dualism to explain contact: how can an unextended thinking substance move an extended body?

Elisabeth of Bohemia, also known as Princess Elisabeth of the Palatinate, was a scholar, correspondent and later abbess of Herford. Her sustained exchange with René Descartes developed original objections about mind-body causation, embodiment, emotion, virtue and the conditions of a good life.
The question she enters
How can something without size, shape or motion cause a body to move?
The central move
Elisabeth accepts that thought and extension may be conceptually distinct but presses Descartes on their causal union. Ordinary physical causation appears to involve contact, shape or motion, none of which belongs to an immaterial mind, so dualism owes more than the assertion that experience shows mind and body interacting.
Key ideas
Where the view strains
Her views are developed through questions and exchanges, making it risky to force them into a single finished system detached from their context.
The objection exposes a weakness in substance dualism without by itself proving that mind is identical with matter.
Sources and routes
Primary texts
On this site