To be successful you have to be selfish, or else you never achieve. And once you get to your highest level, then you have to be unselfish. Stay reachable. Stay in touch. Don't isolate.
Partisans fight on familiar territory with professed political objectives to conquer power. This is what distinguishes them from terrorists.
Books, like proverbs, receive their chief value from the stamp and esteem of the ages through which they have passed.