 Indianapolis: Hackett Publishing Co. 1997. . Secondary sources Ackrill, J. L. (1981) Aristotle the Philosopher.
<coherence>  Indianapolis: Hackett Publishing Co. 1997. . Secondary sources Ackrill, J. L. (1981) Aristotle the Philosopher.
 Indianapolis: Hackett Publishing Co. Secondary sources Ackrill, J. L. (1981) Aristotle the Philosopher.