 He sucked ideas from me, used them himself, and then affected to despise me".Rousseau's break with the "Encyclopedistes" coincided with the composition of his three major works, in all of which he emphasized his fervent belief in a spiritual origin of man's soul and the universe, in contradistinction to the materialism of Diderot, La Mettrie and D'Holbach.During this period, Rousseau enjoyed the support and patronage of Charles François Frédéric de Montmorency-Luxembourg and the Prince de Conti, two of the richest and most powerful nobles in France.