given to that arrangement which begins with logic
and goes on to natural science, ending with ethics ;
not alone because that arrangement has among its
supporters the oldest and most distinguished adhe-
rents of the Stoic School, but far more because in
this way the internal relation of the three parts to
each other can be most clearly brought out. No
doubt, in many respects, natural science is modified
by ethical considerations; but, nevertheless, in the
development of the system, the chief results of
science are used as principles on which ethical doc-
trines are founded; and logic, although introduced
later than the other two branches of study, is the
instrument by means of which they are put into
scientific shape. If the opportunity were afforded of
tracing the rise of the Stoic teaching in the mind of
its founder, it would probably be possible to show
how the physical and logical parts of the system gra-
dually gathered about the original kernel of ethics.
But knowing Stoicism only as we do from the intel-
lectual development which it attained after the time
of Chrysippus, it will be enough, in analysing the
form which it then assumed, to proceed from without
to within, and to advance from logic through natural
science to ethics. When this has been done it will
be time to attempt to retrace our steps backwards,
and to explain the peculiar speculative tenets of the
Stoics by observing how they bear upon ethics.
EEE GE 5 A . » ee, ARE


FIELD OF LOGIC.
CHAPTER V.
LOGIC OF THE STOICS.
