In four years of promoting the "Cleanliness and Politeness" campaign, Mrs. Yu came to understand deeply that the cultivation of the mind and spirit is the root of all behavior. One must begin from inside with the individual mind and spirit, then influence the family, and only then can one create the healthy development of society.
在推動「整潔禮貌」運動的四年之中，俞夫人深切的體認到心靈的修養是一切行為的根基；只有由內而發，從個人心靈的修養做起，進而影響家庭，才能帶動整個社會健全的發展。