The prudent man learns by observation or by experience, or more often by both, that there is spiritual ignorance in the world and in man: he must often conceal the greater portion of his wisdom and his power. This is necessary for his own protection and security. It was a similar caution and desire for personal safety which induced the writers of ancient Hindu texts and medieval Italian ones to advise those who lived under a brutal tyranny to emigrate. This did not mean going to a new country but to a new district.
-- Notebooks Category 11: The Negatives > Chapter 3: Their Presence in The World > # 491