Aristotle (monism)

/

/

Hule [eidos]

Newton

(monism)

/

/

Particle

[(position, momentum)]

Plato

(Allegory of the Sun)

actual world

Idea (=sunlight)

Idea world

Descartes

[A] (=mind)

[B] (=body (≈sensory organ))

(Mediating of A and C)

[C] (=matter)

quantum language

Measurer

[measured value]

Measuring instrument

[observable]

System

[state]