“What branch does not have its leaves and which twig will not have its flowers?”

“The affinities of all the beings of the same class have sometimes been represented by a great tree.I believe this simile largely speaks the truth. The green and budding twigs may represent existing species; and those produced during former years may represent the long succession of extinct species. At each period of growth all the growing twigs have tried to branch out on all sides, and to overtop and kill the surrounding twigs and branches, in the same manner as species and groups of species have at all times overmastered other species in the great battle for life. The limbs divided into great branches, and these into lesser and lesser branches, were themselves once, when the tree was young, budding twigs; and this connection of the former and present buds by ramifying branches may well represent the classification of all extinct and living species in groups subordinate to groups. Of the many twigs which flourished when the tree was a mere bush, only two or three, now grown into great branches, yet survive and bear the other branches; so with the species which lived during long-past geological periods, very few have left living and modified descendants. From the first growth of the tree, many a limb and branch has decayed and dropped off; and these fallen branches of various sizes may represent those whole orders, families, and genera which have now no living representatives, and which are known to us only in a fossil state. As we here and there see a thin straggling branch springing from a fork low down in a tree, and which by some chance has been favoured and is still alive on its summit, so we occasionally see an animal like the Ornithorhynchus or Lepidosiren, which in some small degree connects by its affinities two large branches of life, and which has apparently been saved from fatal competition by having inhabited a protected station. As buds give rise by growth to fresh buds, and these, if vigorous, branch out and overtop on all sides many a feebler branch, so by generation I believe it has been with the great Tree of Life, which fills with its dead and broken branches the crust of the earth, and covers the surface with its ever-branching and beautiful ramifications.”

“Here are fruits, flowers, leaves and branches, and here is my heart which beats only for you.”

“Clean air; bird song; fresh flowers; and the leaves unfurling on the twigs.”

“Does the soul have a passport? Or do you simply pick the branch of the family tree that you prefer, with its preferred location, and hang your history on it?”

“The thing about trees is that they know what to do. When a leaf loses its colour, it's not because its time is up and it's dying, it's because the tree is taking back into itself the nutrients the leaf's been holding in reserve for it, out there on the twig, and why leaves change colour in autumn is because the tree is preparing for winter, it's filling itself with its own stored health so it can withstand the season. Then, clever tree, it literally pushes the used leaf off with the growth that's coming behind it. But because that growth has to protect itself through winter too, the tree fills the little wound in its branch or twig where the leaf was with a protective corky stuff which seals it against cold and bacteria. Otherwise every leaf lost would be an open wound on a tree and a single tree would be covered in thousands of little wounds. Clever trees.”