The heart of the doctrine of three thousand realms in a single moment of life.

Daily Wisdom
From the Writings of Nichiren Daishonin
Wednesday, May 23, 2012:

Ch'ung-hua and Yü were the children of commoners, but both were extremely filial. Hearing of this, King Yao and King Shun summoned Ch'ung-hua and Yü, and abdicated their thrones to them. Commoners became royalty in a day. Just as a commoner can become a king in this present life, so can an ordinary person become a Buddha instantly. This is the heart of the doctrine of three thousand realms in a single moment of life.

Letter to the Sage Nichimyo
Written to Nichimyo on May 25, 1272