I believe that should read "Nero fiddled as rome burned" but I guess Nero was a ceaser.
This comes from the fact that when Rome was struck by fire in 64 A.D. Nero the then emperor did nothing about it and in fact sang. The emperor, who had artistic ambitions, was apparently performing an old Greek play for his houseguests. As violins were not invented till the 16th century he would have needed a time machine to achieve this wonderous feat. However in the 17th century when the phrase first appeared fiddling was used in the sense of frivolity and procrastination. As to motivation the fire was most useful to Nero as it allowed him to rebuild Rome in his own image whilst blaming the christians for the fire.