— 134 —
      §8. Whatsoever the Mind perceives in it self, or is the immediate
object of Perception, Thought, or Understanding, that I call Idea;
and the Power to produce any Idea in our mind, I call Quality of the
Subject wherein that power is. Thus a Snow-ball having the power
to produce in us the Ideas of White, Cold, and Round, the Powers to
produce those Ideas in us, as they are in the Snow-ball, I call
Qualities; and as they are Sensations, or Perceptions, in our Under-
standings, I call them Ideas: which Ideas, if I speak of sometimes, as
in the things themselves, I would be understood to mean those
Qualities in the Objects which produce them in us.
Locke Hum II, 8, §8, p. 134