Instead of pressing, with the foremost of the crowd, into the palace of Constantinople, Libanius calmly expected his arrival at Antioch; withdrew from court on the first symptoms of coldness and indifference; required a formal invitation for each visit; and taught his sovereign an important lesson, that he might command the obedience of a subject, but that he must deserve the attachment of a friend.

The History of the Decline and Fall of the Roman Empire, 3: Complete in Eight Volumes (ed. 1825)