‘Its not that youth is wasted on the young, its that maturity is wasted on the old…….’

The limits of the Roman empire still extended from the Western ocean to the Tigris, and from mount Atlas to the Rhine and the Danube. To the undiscerning eye of the vulgar, Philip appeared a monarch no less powerful than Hadrian or Augustus had formerly been. The form was still the same, but the animating health and vigour were fled. The industry of the people was discouraged and exhausted by a long series of oppression. The discipline of the legions, which alone, after the extinction of every other virtue, had propped the greatness of the state, was corrupted by the ambition, or relaxed by the weakness of the emperors. The strength of the frontiers, which had always consisted in arms rather than in fortifications, was insensibly undermined ; and the fairest provinces were left exposed to the rapaciousness or ambition of the barbarians, who soon discovered the decline of the Roman empire.

Decline and Fall of the Roman Empire (1827) Vol 1 ch. VII page 231