We will set aside as impossible the mixture of two incommensurables,
such as a line and the color called white. A mixture of the soul
and body, which must imply their commensurability, would demand
explanation. Even if the soul interpenetrate the body, the soul
need not share the body's passions, for the interpenetrating medium
may remain impassible; as light, which remains such in spite of its
diffusion.[288] Thus the soul might remain a stranger to the body's
passions, though diffused through it, and need not necessarily undergo
its passions.