For certainly, since I know sciam that all our sensations indicate the truth far more frequently than the contrary, as far as the well being of the body is concerned, and since in examining a particular case I can almost always draw on several of them, as well as on my memory, which connects present with past, and on my understanding, which has already discovered all the causes of error, I need no longer fear that the things the senses represent to me in ordinary life are false: