From the standpoint of our own concerns,
the crucial point of this passage is its assertion that the Great Ultimate is a vibratory movement, wherein movement itself has a limit in which it is transformed to tranquillity which returns to the origin of assertive movement again.
3Eslick
points out that at the
crucial passage in Process and Reality in which Whitehead says Descartes» concept
of substance is a true derivative from Aristotle's, Whitehead refers the reader not to Aristotle's Categories but to W. D. Ross's book about Aristotle (SCCW 504).