Robert Gibson Eccles, Popular Science Monthly (1878)
“ Any system of philosophy that denies a substantive basis for the ego feeling, exclusive of the bases of matter and energy, virtually denies the existence of knowledge of every kind, and so stamps itself as false. Our only assurance of the existence of anything outside of ourselves is the effect produced on consciousness. If the perceiving consciousness is not real, how can we assert that the perceived matter is? Action and reaction are equal and opposite. If consciousness has not persistence and permanence of its own, how can it gauge persistence and permanence in matter and energy? ”
