 Uncompromising, charitable and renouncing the world, he became official confessor of Port-Royal in 1648.The problems caused by the signing of the formulary of Alexander VII in 1661 forced him to flee the monastery, then to try not to sign, all to cause as little scandal as he could.Taking refuge at the home of the duchesse de Longueville at Paris, where he died 3 years later in 1664.