The nearly 200 books of Persian multi talent Abū Bakr Muhammad ibn Zakariyyā al-Rāzī – also known as ‘Rhazes’ – span everything from medicine and chemistry to logic and philosophy. He supposedly goes blind from all the reading and writing. His greatest achievements include the discovery of alcohol and a groundbreaking thesis on measles and smallpox.
As a religious freethinker, his criticism of revelation and the Qurʾān leads to multiple accusations of heresy. For al-Rāzī:
“Reason is the ultimate authority, which should govern and not be governed; should control and not be controlled, should lead and not be led.” – al-Rāzī