To love is to work devotedly for the sake of a fellow human being. When we work devotedly for the sake of another, before we know it not only that person but all things and people are given life, and we ourselves also become happy. That is because human beings are children of God and the brothers and sisters of a single life.
Adapted from Open the Doors of Your Life, Volume 3, p. 87 Seicho-No-Ie