Logic was founded century b. c.e (before the common era.)

Medhatithi Gautama ; 6th

During that time, Medhatithi Gautama advocated for including the scientific process when observing/analyzing natural occurrence rather than blindly relying on faith.  He even established the pursue of scientific Innovations in the scholastic school, that he named as 'Nyaya'. The method that he used in that school became the basic/foundation of modern-day logical approach.