undeveloped as to escape the attention of those who sought to
guide the people in their daily life; and money was accepted as the
inevitable instrument of exchange, without any discussion of its
origin or the laws which regulated it.

The writings of this period therefore betray no sign of any interest
in economic affairs. Jourdain says that he carefully examined the
works of Alcuin, Rabanas Mauras, Scotus Erigenus, Hincmar, Gerbert,
St. Anselm, and Abelard--the greatest lights of theology and
philosophy in the early Middle Ages--without finding a single passage
to suggest that any of these authors suspected that the pursuit of
riches, which they despised, occupied a sufficiently large place in
national as well as in individual life, to offer to the philosopher a
subject fruitful in reflections and results. The only work which might
be adduced as a partial exception to this rule is the _Polycraticus_
of John of Salisbury; but even this treatise contained only some
scattered moral reflections on luxury and on zeal for the interest of
the public treasury.[1]

[Footnote 1: Jourdain, _op. cit._, p. 4.]

Two causes contributed to produce this almost total lack of interest
in economic subjects. One was the miserable condition of society,
still only partially rescued from the ravages of the barbarians, and
half organised, almost without industry and commerce; the other
was the absence of all economic tradition. The existence of the
_Categories_ and _Hermenia_ of Aristotle ensured that the chain
of logical study was not broken; the works of Donatus and Priscian
sustained some glimmer of interest in grammatical theory; certain rude
notions of physics and astronomy were kept alive by the preservation