The same mode of expression is used to denote sensation
and perception; and, therefore, we are apt to look upon
them as things of the same nature. Thus, I feel a pain;
I see a tree: the first denoteth a sensation, the last a per-
ception. The grammatical analysis of both expressions
is the same: for both consist of an active verb and an ob-
ject. But if we attend to the things signified by these
expressions, we shall find that, in the first, the distinction
between the act and the object is not real but grammatical;
in the second, the distinction is not only grammatical
but real.
