As-Saffah

"As power becomes great, concupiscence grows less."

"It is rare that bounty is given unasked but a just claim is destroyed thereby."

"Verily they are the basest and meanest of men who account avarice prudence, and clemency ignoble."

"When forbearance is mischievous, to pardon is weakness."

"Patience is praiseworthy save in what prejudices the faith or renders sovereignty contemptible, and moderation is commendable except at the season of opportunity."