from the beginning will have little need of a commentary, but will soon be in the position to write one himself.
Seventh Principle
46. Nature makes no leaps, but proceeds step by step.
The development of a chicken consists of certain gradual processes which cannot be omitted or deferred, until finally it breaks its shell and comes forth. When this takes place, the mother does not allow the young bird to fly and seek its food (indeed it is unable to so), but she feeds it herself, and by keeping it warm with her body promotes the growth of its feathers. When the chick’s feathers have grown she does not thrust it forth from the nest immediately and make it fly, but teaches it first to move its wings in the nest itself or perching on its edge, then to try to fly outside the nest, though quite near it, by fluttering from branch to branch, then to fly from tree to tree, and later on from hill to hill, till finally it gains sufficient confidence to fly right out in the open. It is easy to see how necessary it is that each of these processes should take place at the right time; that not only the time should be suitable but that the processes should be graduated; and that there should be not graduation merely, but an immutable graduation.
47. Imitation.—The builder proceeds in the same manner. He does not begin with the gables or with the walls, but with foundations. When the foundations are laid he does not go on with the roof, but builds the walls. In a word, the order in which the several stages are combined depends on the relation that they mutually bear to one another.
48. The gardener likewise has to adopt the principle of graduation. The wild-stock must be found, dug up, transplanted, pruned, and cut; the graft must be inserted and the joint made firm, etc., and none of these processes can be omitted or taken in a different order. But, if these processes are carried out properly and in the right order,
