"Develop a true mind that is as boundless as the earth: The earth is our mother that nurtures our life. Not only does the human race depend on the sky and the ocean’s resources for food, they also depend on the earth to survive. The earth supports all forms of life that grow on it, while underneath it there are mines of gold, silver, bronze, and all kinds of minerals. Our mind too, is like the earth in which our Buddha Nature and true nature lie deeply within. We must know where to dig and how to develop in order to uncover these treasures."