is not, which 'puffeth up;' but its opposite, the conceit of
false knowledge,--the conceit, in truth, as the apostle notices,
of an ignorance of the very nature of knowledge:--

'Nam nesciens quid scire sit,
Te scire cuncta jactitas.'

"But as our knowledge stands to Ignorance, so stands it also to
Doubt. Doubt is the beginning and the end of our efforts to
know; for as it is true,--'Alte dubitat qui altius credit,' so
it is likewise true,--'Quo magis quaerimus magis dubitamus.'

"The grand result of human wisdom is thus only a consciousness
that what we know is as nothing to what we know not, ('Quantum
est quod nescimus!')--an articulate confession, in fact, by our
natural reason, of the truth declared in revelation, that '_now_
we see through a glass, darkly.'"

His pupil writes in the same spirit and to the same end:--"A discovery,
by means of reflection and mental experiment, of the _limits_ of
knowledge, is the highest and most universally applicable discovery of
all; it is the one through which our intellectual life most strikingly
blends with the moral and practical part of human nature. Progress in
knowledge is often paradoxically indicated by a diminution in the
_apparent bulk_ of what we know. Whatever helps to work off the dregs of
false opinion, and to purify the intellectual mass--whatever deepens our
conviction of our infinite ignorance--really adds to, although it
sometimes seems to diminish, the rational possessions of man. This is
the highest kind of merit that is claimed for Philosophy, by its
earliest as well as by its latest representatives. It is by this
standard that Socrates and Kant measure the chief results of their
toil."

BOOKS REFERRED TO.

1. Arnauld's Port-Royal Logic; translated by T. S. Baynes.--2. Thomson's
Outlines of the Necessary Laws of Thought.--3. Descartes on the Method
of Rightly Conducting the Reason, and Seeking Truth in the Sciences.--4.
Coleridge's Essay on Method.--5. Whately's Logic and Rhetoric; new and
cheap edition.--6. Mill's Logic; new and cheap edition.--7. Dugald
Stewart's Outlines.--8. Sir John Herschel's Preliminary
Dissertation.--9. Quarterly Review, vol. lxviii; Article upon Whewell's
Philosophy of Inductive Sciences.--10. Isaac Taylor's Elements of
Thought.--11. Sir William Hamilton's edition of Reid; Dissertations; and
Lectures.--12. Professor Fraser's Rational Philosophy.--13. Locke on the
Co