7. Ideas in the mind, qualities in bodies.
To discover the nature of our ideas the better, and to discourse of them
intelligibly, it will be convenient to distinguish them as they are ideas or perceptions in our minds; and as they are
modifications of matter in the bodies that cause such perceptions in us: that so we may not think (as perhaps
usually is done) that they are exactly the images and resemblances of something inherent in the subject; most of
those of sensation being in the mind no more the likeness of something existing without us, than the names that
stand for them are the likeness of our ideas, which yet upon hearing they are apt to excite in us.
