The Daishonin encourages us to be "filial towards our father and mother."* A person who can repay their debt of gratitude to their parents is indeed a truly great person. Through what we say and do let's do all we can to convey our appreciation to our parents.
*The Four Virtues and the Four Debts of Gratitude - WND 2, page 636
Translation of "To My Friends" published in the Seikyo Shimbun, based on President Ikeda's recent guidance, with universal value and application