"Sir Isaiah Berlin has always been unhappy about the possibility of a lack of connection between the intellectual and what is actually happening, and he made a beautiful differentiation between intellectuals and the intelligentsia. The intelligentsia of a country (and the whole definition flourished in Russia), is the community of enlightened people who display a high moral concern with what is happening around them. A member of the intelligentsia does not have to be an intellectual or a scholar, Sir Isaiah."
January 1, 1970
https://en.wikiquote.org/wiki/Isaiah_Berlin