Only this incident inseparable every custom must have, viz., that it be consonant to reason; for how long soever it hath continued, if it be against reason, it is of no force in law.
Bio: Yoshida Kenkō was a Japanese author and Buddhist monk. His most famous work is Tsurezuregusa, one of the most studied works of medieval Japanese literature. Kenko wrote during the Muromachi and Kamakura periods.