The question asks which philosopher believed the soul could exist separately from the body. This concept is central to the philosophy of mind and metaphysics.
Rene Descartes, a prominent 17th-century philosopher, mathematician, and scientist, is famous for his theory of mind-body dualism. He argued that the mind (or soul, which he considered the seat of consciousness and thought) and the body are two distinct and separable substances.
Descartes famously stated, "I think, therefore I am" (Cogito, ergo sum), establishing the certainty of his own existence as a thinking being. He believed that because he could conceive of his mind existing without his body, and vice versa, they must be fundamentally different entities. This allows for the possibility of the soul (mind) surviving the death of the body.
Therefore, Rene Descartes is the philosopher most directly associated with the clear articulation of the belief that the soul (mind) is a distinct substance capable of existing separately from the body.
| List-I | List-II |
| Electronic Configuration | First Ionisation energy (kJ mol$^{-1}$) |
| (A). ns$^2$ | (I). 2100 |
| (B). ns$^2$np$^1$ | (II). 1400 |
| (C). ns$^2$np$^3$ | (III). 800 |
| (D). ns$^2$np$^6$ | (IV). 900 |
| List-I | List-II |
| Spectroscopy | Property |
| (A). Raman | (I). Polarizability |
| (B). FTIR | (II). Dipole Moment |
| (C). UV-Visible | (III). Absorbance |
| (D). NMR | (IV). Spin |