— 137 —
      §17. The particular Bulk, Number, Figure, and Motion of the parts of
Fire, or Snow, are really in them, whether any ones Senses perceive
them or no: and therefore they may be called real Qualities, because
— 138 —
they really exist in those Bodies. But Light, Heat, Whiteness, or
Coldness, are no more really in them, than Sickness or Pain is in Manna.
Take away the Sensation of them; let not the Eyes see Light, or
Colours, nor the Ears hear Sounds; let the Palate not Taste, nor the
Nose Smell, and all Colours, Tastes, Odors, and Sounds, as they
are such particular Ideas, vanish and cease, and are reduced to their
Causes, i.e. Bulk, Figure, and Motion of Parts.
Locke Hum II, 8, §17, pp. 137-138