Bhagavan Gauthama founded the Science of Logic, Nyaya Sastra, for the establishment of Vedic concepts and for the refutatation of non-Vedic arguments.
Nyaya Sastra is the one of six main sciences.
“The Science of Logic is that which illumines all Learning, the instrument of all actions and is the refuge of all moral ethics analysed completely for the purpose of Knowledge”
Pradeepa sarva Vidhyanam
Upadhi sarva karmanam
Ashraya sarva dharmanam
Vidhy dhese pareekhithah
This is in line with the Western definition of Logic, that it is the science of the regulative principles of thought.
It is said that the Lord, in His Timeless Eternity, fed up with the illogical events happening on earth, wondered why human beings are so illogical and incarnated as Bhagavan Gauthama to reveal the Science of Logic, the Wisdom of Nyaya Sastra to mankind !