§ 20
Fifth edition
This spirit-like power to alter man’s state of health (and hence to cure diseases) which lies hidden in the inner nature of medicines can never be discovered by us by a mere effort of reason; it is only by experience of the phenomena it displays when acting on the state of health of man that we can become clearly cognizant of it.
Sixth edition
This spirit-like power to alter man’s state of health (and hence to cure diseases) which lies hidden in the inner nature of medicines can in itself never be discovered by us by a mere effort of reason; it is only by experience of the phenomena it displays when acting on the state of health of man that we can become clearly cognizant of it.
