In the Meditations Marcus engages in a series of philosophical exercises designed to digest philosophical theories, to transform his character or 'dye his soul' in the light of those theories (see . Med. ), and so to transform his behavior and his entire way of life. By reflecting upon philosophical ideas and, perhaps more importantly, writing them down, Marcus engages in a repetitive process designed to habituate his mind into a new way of thinking. This procedure is quite distinct from the construction of philosophical arguments and has a quite different function. Whereas the former is concerned with creating a particular philosophical doctrine, the latter is a practical exercise or training designed to assimilate that doctrine into one's habitual modes of behavior. Following the account of three types of philosophical training outlined by Epictetus, Marcus reflects in the Meditations upon a medley of physical, ethical, and logical ideas. These written reflections constitute a second stage of philosophical education necessary after one has studied the philosophical theories (see . Epictetus Discourses ). By engaging in such written philosophical exercises Marcus attempts to transform his soul or inner disposition that will, in turn, alter his behavior. Thus, this second stage of philosophical education is the process by which a philosophical apprentice trains himself to put theories into practice, and so make progress towards wisdom.