— 614 —
For this teaches but the signification of Words.
      §7. Before a Man makes any Proposition, he is supposed to under-
stand the terms he uses in it, or else he talks like a Parrot, only
making a noise by imitation, and framing certain Sounds, which he
has learnt of others; but not, as a rational Creature, using them for
signs of Ideas, which he has in his Mind. The Hearer also is supposed
to understand the Terms as the Speaker uses them, or else he
talks jargon, and makes an unintelligible noise. And therefore he
trifles with Words, who makes such a Proposition, which when it
is made, contains no more than one of the Terms does, and which a
Man was supposed to know before: v.g. a Triangle hath three sides, or
Saffron is yellow. And this is no farther tolerable, than where a Man
goes to explain his Terms, to one who is supposed or declares him-
self not to understand him: and then it teaches only the signification of
that Word, and the use of that Sign.
Locke Hum IV, 8, §7, p. 614