This is the great benefit of Buddhism.

For Today and Tomorrow

Daily Encouragement by Daisaku Ikeda
Saturday, May 31, 2014:

Buddhism is about bringing happiness, joy and fulfillment to all. It enables us not only to become happy ourselves but to make causes for the enlightenment of our ancestors seven-plus generations back and for the happiness and prosperity of our children, grandchildren and descendants throughout future generations. This is the great benefit of Buddhism.