Strict Materialism

If my mental processes are determined wholly by the motions of atoms in my brian, I have no reason to suppose that my beliefs are true.. and hence I have no reason for supposing my brain to be composed of atoms.

JBS Haldane

Materialism

If (my wife who died) 'is not,' then she never was. I mistook a cloud of atoms for a person. There aren't, and never were, any people. Death only reveals the vacuity that was always there. What we call the living are simply those who have not yet been unmasked. All equally bankrupt, but some not yet declared. But this must be nonsense; vacuity revealed to whom? Bankruptcy declared to whom? To other boxes of fireworks or clouds of atoms. I will never believe — more strictly I can't believe — that one set of physical events could be, or make, a mistake about other sets.

CS Lewis
A Grief Observed