"Someone's sitting in the shade today because someone planted a tree a long time ago."
"I looked up my family tree and found three dogs using it."
"The Earth reminded us of a Christmas tree ornament hanging in the blackness of space. As we got farther and farther away it diminished in size. Finally it shrank to the size of a marble, the most beautiful marble you can imagine."
"Except during the nine months before he draws his first breath, no man manages his affairs as well as a tree does."
"It is remarkable how closely the history of the apple tree is connected with that of man."
"Earth teach me to forget myself as melted snow forgets its life. Earth teach me resignation as the leaves which die in the fall. Earth teach me courage as the tree which stands all alone. Earth teach me regeneration as the seed which rises in the spring."
"Liturgy is like a strong tree whose beauty is derived from the continuous renewal of its leaves, but whose strength comes from the old trunk, with solid roots in the ground."
"The tree which moves some to tears of joy is in the eyes of others only a green thing that stands in the way. Some see nature all ridicule and deformity... and some scarce see nature at all. But to the eyes of the man of imagination, nature is imagination itself."
"Behind the man is the Tree of Life, bearing twelve fruits, and the Tree of the Knowledge of Good and Evil is behind the woman the serpent is twining round it."
"Art is the tree of life. Science is the tree of death."