of mental science, and the subject which must be first
considered in forming the theory of the Mind."'

This citation from Mr Mill's book is already almost too long, yet we
could have wished to prolong it still more, from the importance of some
of the succeeding paragraphs. It presents, in clear discrimination and
contrast, two opposite points of view according to which the phenomena
of mind are regarded by different philosophers, and the method of
studying them determined: the _introspective_ method, adopted by M.
Cousin and others--the _psychological_ or analytical method, pursued by
Locke and by many other eminent men since Locke--'the known and approved
method of physical science, adapted to the necessities of
psychology'--(p. 148).

There are passages of Sir W. Hamilton's writings in which he appears to
feel that the _introspective_ method alone is insufficient for the
interpretation of Consciousness, and that the analytical method must be
employed to reinforce it. But on this as on other points he is not
always consistent with himself. For in laying down the principle upon
which the primary truths of Consciousness, the original data of
intelligence, are to be ascertained and distinguished from
generalizations out of experience and custom, he declares that the one
single and certain mark is Necessity--they must be beliefs which we are
under the necessity of believing--of which we cannot get rid by any
mental effort. He decides this, of course, for himself, by the
_introspective_ method alone. He (with M. Cousin and other philosophers
who take the same view) does not apply the analytical method to inquire
whether his necessity of belief may not be a purely acquired necessity
and nowise congenital. It is, indeed, remarkable that these philosophers
do not even seek to apply the introspective method as far as that method