In short, this principle is supported by such a number of common and vulgar phaenomena, that we may spare ourselves the trouble of insisting on it any farther.
The same evidence follows us in our second principle, OF THE LIBERTY OF THE IMAGINATION TO TRANSPOSE AND CHANGE ITS IDEAS.

The fables we meet with in poems and romances put this entirely out of the question.

Nature there is totally confounded, and nothing mentioned but winged horses, fiery dragons, and monstrous giants.

Nor will this liberty of the fancy appear strange, when we consider, that all our ideas are copyed from our impressions, and that there are not any two impressions which are perfectly inseparable.

Not to mention, that this is an evident consequence of the division of ideas into simple and complex.