d the development of the mercantile and
manufacturing classes, which, in turn, strengthened the democratic
movement. Meanwhile, a great literature was also arising, bold and
inquiring. Nevertheless, it failed to diminish the national
superstition.

This illiberality in religion was caused in the first place by the power
of the clergy. Religion was the essential feature of the Scotch war
against Charles I. Theological interests dominated the secular because
the clergy were the champions of the political movement. Hence, in the
seventeenth century, the clergy were enabled to extend and consolidate
their own authority, partly by means of that great engine of tyranny,
the kirk sessions, partly through the credulity which accepted their
claims to miraculous interpositions in their favour. To increase their
own ascendancy, the clergy advanced monstrous doctrines concerning evil
spirits and punishments in the next life; painted the Deity as cruel and
jealous; discovered sinfulness hateful to God in the most harmless acts;
punished the same with arbitrary and savage penalties; and so crushed
out of Scotland all mirth and nearly all physical enjoyment.

Scottish literature of the eighteenth century failed to destroy this
illiberality owing to the method of the Scotch philosophers. The school
which arose was in reaction against the dominant theological spirit; but
its method was deductive not inductive. Now, the inductive method, which
ascends from experience to theory is anti-theological. The deductive
reasons down from theories whose validity is assumed; it is the method
of theology itself. In Scotland the theological spirit had taken such
firm hold that the inductive method could not have obtained a hearing;
whereas in England and France the inductive method has been generally
followed.

The great secular philosophy of Scotland was initiated by Hutchinson.
His system of morals was based not on revealed principles, but on laws
ascertainable by human intelligence; his positions were in fiat
contradiction to those of the clergy. But his method assumes intuitive
faculties and intuitive knowledge.

The next and the greatest name is that of Adam Smith, whose works, "The
Theory of Moral Sentiments" and "Wealth of Nations," must be taken in
conjunction. In the first he works on the assumption that sympathy is
the mainspring of human conduct. In the "Wealth of Nations" the
mainspring is selfishness. The two are not contradictory, b