Robert Frost said this quote

For, dear me, why abandon a beliefMerely because it ceases to be true?Cling to it long enough, and not a doubtIt will turn true again, for so it goes.Most of the change we think we see in lifeIs due to truths being in and out of favor.As I sit here, and often times, I wishI could be monarch of a desert landI could devote and dedicate foreverTo the truths we keep coming back and back to.––from The Black Cottage