Rousseau continued his interest in music. He wrote both the words and music of his opera Le devin du village ( The Village Soothsayer ), which was performed for King Louis XV in 1752. The king was so pleased by the work that he offered Rousseau a lifelong pension. To the exasperation of his friends, Rousseau turned down the great honor, bringing him notoriety as "the man who had refused a king's pension". He also turned down several other advantageous offers, sometimes with a brusqueness bordering on truculence that gave offense and caused him problems. The same year, the visit of a troupe of Italian musicians to Paris, and their performance of Giovanni Battista Pergolesi 's La serva padrona , prompted the Querelle des Bouffons , which pitted protagonists of French music against supporters of the Italian style. Rousseau as noted above, was an enthusiastic supporter of the Italians against Jean-Philippe Rameau and others, making an important contribution with his Letter on French Music .
When principles of justice operate ineffectively or not at all, confidence in and organization's or the society's institutions may be undermined. Citizens or group members may feel alienated and withdraw their commitment to those "unjust" institutions. Or, they may rebel or begin a revolution in order to create new institutions. This was the essence of the "Arab Spring" uprisings that began in 2010 and continue today (2013); it is also the essence of uprisings that have occurred off and on (though with much less intensity and violence) in Europe over the same time period. If justice principles are applied effectively, on the other hand, organizations and societies will tend to be more stable and its members will feel satisfied and secure.