M. Valentine, Theoretical Ethics
“ Whatever power of regulation, change or control we possess over these functions does not belong to the powers themselves, but to the will or the personal capacity of free choice and self-regulation. It is only through our will-power that we can handle and direct our thinking or control the direction and force of our feelings. So, too, the ideas of right and wrong, the perceptions of duty and the sense of obligation come into the presence of the will of necessity. ”
