“There is nothing, save the selfish heart of man, that lives unto itself. No bird that cleaves the air, no animal that moves upon the ground, but ministers to some other life. There is no leaf of the forest, or lowly blade of grass, but has its ministry. Every tree and shrub and leaf pours forth that element of life without which neither man nor animal could live; and man and animal, in turn, minister to the life of tree and shrub and leaf. The angels of glory find their joy in giving love and tireless watchcare to souls that are fallen and unholy.”
Desire of Ages p. 21