" We know very well that we have ancestors. But our ancestors are not only human. We have animal ancestors; we have plant ancestors; and we have mineral ancestors. Our human ancestors are still very young. Human beings appeared very late in the history of life on Earth. Our animal ancestors are still there within us. The reptile, the fish, and the ape are still in our blood. Not only were they part of us in the past, but they continue to exist within us. Just look deeply into your cells. We see that we are the whole history of life. "

― Thich Nhat Hanh , Good Citizens: Creating Enlightened Society