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Chapter XXI



Of the Division of the Sciences.

Three sorts.
      §1. All that can fall within the compass of Humane Understanding,
being either, First, The Nature of Things, as they are in themselves,
their Relations, and their manner of Operation: Or, Secondly, That
which Man himself ought to do, as a rational and voluntary Agent,
for the Attainment of any End, especially Happiness: Or, Thirdly,
The ways and means, whereby the Knowledge of both the one and
the other of these, are attained and communicated; I think, Science
may be divided properly into these Three sorts.
Locke Hum IV, 21, §1, p. 720