The man was beset by friends who told him he was mad to continue the chase, and that his undoubted talents in other lines were being wasted. He was implored, reproached, and belabored by his wife, who begged him to leave his furnace, and turn to work that would feed and clothe his growing family. He might well have seemed a fanatic, he might well have seemed distraught and cruel to his family, but he met each protest with a simple frankness that disarmed all attacks and showed his indomitable purpose. Those were days of intense suffering for Palissy, and later he described them in his own writings in a way that showed his real depth of feeling and his constant struggle against what he held to be temptations.
He borrowed money to build a new furnace, and when this was done he lived by it, trying one combination of materials after another in his search for the secret of the enamel. Those were superstitious days, and some of his more ignorant neighbors thought that Bernard Palissy must be in league with the devil, since he spent day and night feeding fuel to his furnace, and sending a great volume of smoke and sparks into the air. Some said he was an alchemist trying to turn base metals into gold, some that he was discovering new poisons, some frankly believed that his learning had turned his mind and made him mad. They were all certain of one thing, and that was that his great fires were providing very ill for his family, who became in time a charge on the town's charity.
For sixteen years Palissy experimented. For sixteen years he had to resist the reproaches of wife and children, and the threats of neighbors. That was an epic struggle, well worth the recording. We can picture the little mediæval town, surrounded by its salt marshes, the prosperous burghers, and the strange man, Bernard Palissy, at whom all others scoffed, whose children played in the streets in rags and tatters, but who, himself, was always working at his furnace with demoniac zeal. "Too much learning," says one burgher, shaking his head. "What business had a simple glass-worker to study those texts out of Italy?" "Seeking for more learning than other folk have is apt to league one with the Evil One," says number two. "Bernard has sold his soul. He will fall in his furnace some day, and go up in smoke." "Nay," says the third burgher, "he will live forever, to bring shame to our town of Saintes. He is like one of those plagues the priests tell us of." And he crosses himself devoutly.