Through his use of medicine , he was convinced that he came up with a better answer , the brain .
The Stoics , according to Galen , failed to give a credible answer for the localization of functions of the psyche , or the mind .
Through Galen 's use of medicine , Galen was convinced that he came up with a better answer , the brain .
The Stoics , according to Galen , failed to give a credible answer for the localization of functions of the psyche , or the mind .