
630 HISTORY AND NATURE IN TOKUGAWA THOUGHT
the easily accessible language of the day about the fundamentals of
scientific farming, the accurate assessment of
seasonal,
weather, clima-
tic,
and soil conditions to maximize agricultural production. Hand-
books based on Yasusada's work proliferated throughout villages in the
country, greatly enhancing the science of agriculture among the Toku-
gawa peasantry in one of the most momentous developments in the
intellectual history of commoners. To Yasusada, the proper object of
knowledge was not so much history - although he did not deny the
importance of the subject for scholars - but natural history, the actual
conditions bequeathed by natural legacy that determined how people
must act in accordance with it to
save
society.
Commoners must not wait
for benevolent barons from above to nourish them or meditate about
their spirit but must alleviate suffering based on the firm epistemologi-
cal control of natural reason.
This theme was popularized still further by Nishikawa Joken
(1648-1724). A merchant astronomer in Nagasaki, Joken penned two
enormously successful didactic tracts aimed specifically at common-
ers,
one entitled Chonin
bukuro
(A bagful of knowledge for merchants,
1719) and the other
Hyakushd bukuro
(A bagful for peasants, 1721).
36
As implied in the metaphor of the bag, these works were a miscellany
of ethical and practical ideas that ranged from nature, politics, history,
language, custom, infanticide, and even to diet, in regard to the bane-
ful effects of consuming red meats and
wines
in the manner of Western-
ers.
In short, bits and pieces of knowledge drawn from a wide variety
of
sources,
some scholarly, others not, were assembled in a convenient
and readable format and with certain consistent themes emphasized
through repetition. More than moral didacticism pure and simple,
these themes add up to the affirmation of the epistemology based on
natural ontology that accorded closely with the thinking of Ekken,
Antei, and Ranju.
Emphasizing that all human beings existed within a broad and uni-
versal natural order, not apart from or superior to it, Joken drew from
this premise the conclusion that all people, regardless of status or
genealogy, were therefore relative to that absolute. Because at some
ultimate level all human beings shared a common natural essence, the
moralistic claims assigned to social hierarchy regarding superior and
inferior were unacceptable. That natural essence, however, was the
relative capacity possessed by all to acquire universalistic knowledge
36 These two works are, respectively, in Nakamura Yukihiko, ed. Kinsei
chonin
shiso,
vol. 59 of
Nihon shiso taikei (Tokyo: Iwanami shoten, 1975), pp. 85-174; and Takimoto Seiichi, ed.,
Nihon keizai taken, vol. 4 (Tokyo: Meiji bunken, 1967), pp. 493-534.
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