[19]
The order to be followed in definition is invariable.
We first ask what a thing is, and then, whether it is
this.1 And there is generally more difficulty in the
establishment than in the application of a definition.
In determining what a thing is, there are two things
which require to be done: we must establish our
own definition and destroy that of our opponent.
Consequently in the schools,
1 i. e. the thing under consideration.
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