<p>Nasir al-Din al-Tusi was an extraordinary polymath who lived in the 13th century a time of dynamic intellectual activity in the Islamic world that created the foundations of later philosophical scientific and theological research. This book is a compilation of treaties between al-Tusi and other remarkable scholars - 18 of them - discussing a wide range of topics from philosophy religion and natural sciences including astronomy and medicine. </p><p></p><p></p><p></p><p></p><p></p>