This is Volume I of ten of a series on Ancient Philosophy. Originally published in 1957, the present volume is the result of several years of research in ancient philosophy. It began with the main purpose of elucidating the theme of contrariety and the role it played in the Aristotelian treatises as well as a look into its pre-Aristotelian history.

This is Volume I of ten of a series on Ancient Philosophy. Originally published in 1957, the present volume is the result of several years of research in ancient philosophy. It began with the main purpose of elucidating the theme of contrariety and the role it played in the Aristotelian treatises as well as a look into its pre-Aristotelian history.

This is Volume I of ten of a series on Ancient Philosophy. Originally published in 1957, the present volume is the result of several years of research in ancient philosophy. It began with the main purpose of elucidating the theme of contrariety and the role it played in the Aristotelian treatises as well as a look into its pre-Aristotelian history.

This is Volume I of ten of a series on Ancient Philosophy. Originally published in 1957, the present volume is the result of several years of research in ancient philosophy. It began with the main purpose of elucidating the theme of contrariety and the role it played in the Aristotelian treatises as well as a look into its pre-Aristotelian history.

This is Volume I of ten of a series on Ancient Philosophy. Originally published in 1957, the present volume is the result of several years of research in ancient philosophy. It began with the main purpose of elucidating the theme of contrariety and the role it played in the Aristotelian treatises as well as a look into its pre-Aristotelian history.

This is Volume I of ten of a series on Ancient Philosophy. Originally published in 1957, the present volume is the result of several years of research in ancient philosophy. It began with the main purpose of elucidating the theme of contrariety and the role it played in the Aristotelian treatises as well as a look into its pre-Aristotelian history.