 Ten years later, Rousseau made inquiries about the fate of his son, but no record could be found.When Rousseau subsequently became celebrated as a theorist of education and child-rearing, his abandonment of his children was used by his critics, including Voltaire and Edmund Burke, as the basis for "ad hominem" attacks.Beginning with some articles on music in 1749, Rousseau contributed numerous articles to Diderot and D'Alembert's great "Encyclopédie", the most famous of which was an article on political economy written in 1755.