Declare your jihad on thirteen enemies you cannot see -egoism, arrogance, conceit, selfishness, greed, lust, intolerance, anger, lying, cheating, gossiping and slandering. If you can master and destroy them, then you will be read to fight the enemy you can see.
حجة الإسلام أبو حامد محمد الغزالي
anger, arrogance, cheating, conceit, egoism, gossiping, greed, intolerance, islam, jihad, lust, lying, selfishness, slandering