PhD in Education
اگر کسی حرف های شما را نمی فهمد به مفهوم دشمن بودن با شما نیست
Sun Tzu:
If you know the enemy and know yourself, you need not fear the result of a hundred battles. If you know yourself but not the enemy, for every victory gained you will also suffer a defeat. If you know neither the enemy nor yourself, you will succumb in every battle.