Looking for a quote I once heard, something about how constantly changing your views is better than firmly standing by them?

Just looking for the actual quote…I know it’s famous, but I can’t remember who said it or where I read it. It was about how constantly changing your opinion multiple times over the course of your life was wiser than stubbornly abiding by just one view/opinion…or something like that. Anyone know the quote?

PS: THIS IS NOT AN ARGUMENT ABOUT PHILISOPHY/MORALS/VALUES/CHANGING OPINIONS. I AM JUST LOOKING FOR THE QUOTE. PLEASE DO NOT DERAIL THIS THREAD. Thanks.