Full Idea
Knowledge seems to me to be nothing but the perception of the connexion and agreement, or disagreement and repugnancy of any of our ideas.
Gist of Idea
Knowledge is just the connection or disagreement of our ideas
Source
John Locke (Essay Conc Human Understanding (2nd Ed) [1694], 4.01.02)
Book Reference
Locke,John: 'Essay Concerning Human Understanding', ed/tr. Nidditch,P.H. [OUP 1979], p.524