Knowledge that isn't shared is not knowledge.
Source: Kōkōrangi: Māori astronomer guiding crowds into the New Year.
@Miraz Here’s another—from a completely different context—that rhymes with yours: “Cognition is the most socially-conditioned activity of man, and knowledge is the paramount social creation.” – Ludwik Fleck, Genesis and Development of a Scientific Fact (original German 1935, English translation 1979), chap. 2, sec. 4.