“Enemies strengthen you. Allies weaken.”
“For should the enemy strengthen his van, he will weaken his rear; should he strengthen his rear, he will weaken his van; should he strengthen his left, he will weaken his right; should he strengthen his right, he will weaken his left. If he sends reinforcements everywhere, he will everywhere be weak.”
“Time, which strengthens friendship, weakens love.”
“If there is one thing worse that the modern weakening of major morals, it is the modern strengthening of minor morals.”
“A love for tradition has never weakened a nation, indeed it has strengthened nations in their hour of peril. ”
“If you want to strengthen an enemy and make him exult - hate him.”