Hyl. Nothing else.
Phil. And consequent to each particular motion of the nerves, the mind is affected with a sensation, which is some particular colour.
Hyl. Right.
Phil. And these sensations have no existence without the mind.
Hyl. They have not.
Phil. How then do you affirm that colours are in the light; since by light you understand a corporeal substance external to the mind?
Hyl. Light and colours, as immediately perceived by us, I grant cannot exist without the mind. But in themselves they are only the motions and configurations of certain insensible particles of matter.
Phil. Colours then, in the vulgar sense, or taken for the immediate objects of sight, cannot agree to any but a perceiving substance.
Hyl. That is what I say.
Phil. Well then, since you give up the point as to those sensible qualities which are alone thought colours by all mankind beside, you may hold what you please with regard to those invisible ones of the philosophers. It is not my business to dispute about them; only I would advise you to bethink yourself, whether, considering the inquiry we are upon, it be prudent for you to affirm—the red and blue which we see are not real colours, but certain unknown motions and figures which no man ever did or can see are truly so. Are not these shocking notions, and are not they subject to as many ridiculous inferences, as those you were obliged to renounce before in the case of sounds?