— 579 —
Chapter VI

Of Universal Propositions, their Truth and Certainty.

Treating of Words necessary to Knowledge.
      §1. Though the examining and judging of Ideas by themselves,
their Names being quite laid aside, be the best and surest way to
clear and distinct Knowledge: yet through the prevailing custom
of using Sounds for Ideas, I think it is very seldom practised. Every
one may observe how common it is for Names to be made use of,
instead of the Ideas themselves, even when Men think and reason
within their own Breasts; especially if the Ideas be very complex,
and made up of a great Collection of simple ones. This makes the
consideration of Words and Propositions, so necessary a part of the Treatise
of Knowledge, that ’tis very hard to speak intelligibly of the one,
without explaining the other.
Locke Hum IV, 6, §1, p. 579