ABSTRACT
The faculty of thought together with those of affects and volition occupy the main interest of psychologists and psychiatrists, especially when they examine the present mental state of a patient. A significant and elucidating position of the philosopher can be found in the comparison he makes between thought and sense-perception, in which he opposes the view of earlier philosophers who identified the two as one and the same. The philosopher underlines two important attributes of knowledge. Whoever possesses episteme is able to think and study various subjects in their totality and can do that on his own free will as to when and how. Phronesis (from the verb phronein) undoubtedly belongs to one of the types by which a thought process presents itself, but it has been used by the ancient philosopher in various places of the texts in different ways, so that most scholars have had difficulties in translating it.
