Spiritualism and materialism are two halves of one Cartesian dualism, not opposites

Evidence

The fact is that spiritualism and materialism, in the philosophical sense of these expressions, have no significance apart from one another: they are simply two halves of the Cartesian dualism, whose radical separation has been turned into a kind of antagonism; and since then, the whole of philosophy has oscillated between these two terms without being able to pass beyond them. — Wael Hallaq, Restating Orientalism, 293

Categorization

• DEFINE: Frames spiritualism/materialism as parts of a single Cartesian frame rather than genuine alternatives.
• XREF: connects to: Occultism’s spiritualism severs body and soul more cleanly than Descartes did — Theodor W. Adorno, Minima Moralia: Reflections from…, 264; Sartre’s Cartesian subject-object split produces his overestimation of matter — Fredric Jameson, Marxism and Form, 478; Materialism opposes religion while realism opposes speculation and transcendence (+3 more)