Ibn Khaldun
“Habit is second nature.”
“Dynasties have a natural life span.”
“The phenomena of human society are subject to laws.”
“Luxury corrupts both the state and the individual.”
“Commerce is the art of taking advantage of mutual needs.”
“Civilization is the goal of society; its corruption is the beginning of its end.”
“Government prevents injustice other than such as it commits itself.”
“The past resembles the future more than one drop of water resembles another.”