A hotly-debated topic in Mauritania these days is social security, described as "the foundation for social justice in a modern state" by Mohamed Abdallahi Ould Guelaye, president of the Mauritanian Parliamentary Commission on Public Welfare and Health and author of a recent report on social security reform. "It is an expression of national solidarity: the wealthy pay for the poor, the healthy help the sick and are helped in turn when they fall ill," he said.