duc de Louis de Rouvroy Saint-Simon, Memoirs of Louis XIV and His Court and of the Regency…
“ He made a last journey to Versailles, where he saw his mistress in private, and quarrelled with her cruelly. After dining with Torcy he returned to Paris. There, torn by a thousand storms of love, of jealousy, of ambition, his head was so troubled that doctors were obliged to be called in, and he was forbidden to see any but the most indispensable persons, and those at the hours when he was least ill. A hundred visions passed through his brain. Now like a madman he would speak only of Spain, of Madame de Bourgogne, of Nangis, whom he wished to kill or to have assassinated ”
