" The same thing applies to the mind. We think and feel and act, but there is not, in addition to thoughts and feelings and actions, a bare entity, the mind or the soul, which does or suffers these occurrences. The mental capacity of a person is a continuity of habit and memory: there was yesterday one person whose feelings I can remember, and that person I regard as myself of yesterday; but, in fact, myself of yesterday was only certain mental occurrences which are now remembered and are regarded as part of the person who now recollects them. All that constitutes a person is a series of experiences connected by memory and by certain similarities of the sort we call habit. "
― Bertrand Russell , Why I Am Not a Christian and Other Essays on Religion and Related Subjects