https://bobby-fischer-1972.blogspot.com/ The term "temperamental" began usage, for instance, due to Bobby's religious observance of the same sabbath as Jews worship on. Antisemitic organizers felt they had the right to discriminate and force Bobby Fischer to play on sabbath. He refused to compromise. He dropped out although he was in the lead. He was devout in his faith, and unfairly ridiculed in the press by Antisemites.