The child imagines the tree
as a field of action,
explores its emptiness,
occupies its branches,
while the adult suffers the tree
as an object of perception,
its negative spaces,
and the shade at its feet.
The child's body
reaches right up to reality;
the facts impinge
upon its surface,
while the adult's body
longs for a proper ideal,
and the act recedes
to mere appearances.