Philosophy can change our way of living. We will associate such a change with the term self-transformation, because it implies a change of one’s character and not merely a change of one’s environment. “Self-transformation changes the internal disposition that determines the way in which one responds to external events” [Sellars, 83].
Above model (Fig.1) was developed in the antiquity. In the course of history theory was widely detached from practice and philosophy lost its therapeutic character. The ancient concept survived in niches until it was rediscovered and revitalized in modern philosophy. Following the historical course of events with some concrete examples for the meaning of theory and practice: