William Makepeace Thackeray said this quote

Of all the vices which degrade the human character, Selfishness is the most odious and contemptible. An undue love of Self leads to the most monĀ¬strous crimes and occasions the greatest misfortunes both in States and Families. As a selfish man will impoverish his family and often bring them to ruin, so a selfish king brings ruin on his people and often plunges them into war.