Everyone knows the story of the Garden of Eden, with its tree of knowledge. This tree has been famous for its fruit, of which Adam and Eve ate and thus initiated the original sin, eternal damnation etc etc… Even though fruit is a healthy and sweet-tasting snack it is not the only good thing to come out of trees. In fact the fruit is by its nature ephemeral and quickly devoured. Other parts of the tree, however, are significantly more perpetual.