Abu ʿAbdillah Muhammad ibn Idris ash-Shafi’ee 204 AH (May Allah have mercy on him) said,

ما جادلت عالما الا غلبته ، وما جادلت جاهلا الا غلبني

“I have never debated with a knowledgeable person, except that I won the debate, and I have never debated with an ignorant person, except that I lost.”