The Doctor and the Prescription

The doctor treating Reb Moshe asked a chassid whether he thought Reb Moshe was crazy. When the chassid shook his head and said no, the doctor replied, "You are right. He is not crazy. He is a genius."

When they tried to give Reb Moshe intravenous medicine, he refused unless he was allowed to read the prescription first. The doctor laughed to himself and agreed, thinking, what could this old Jew know about these technical medical terms? After reading through them, Reb Moshe asked, "Is this ingredient not non-kosher? Does it not come from pork?" "I myself did not know," admitted the doctor, "and after looking it up I agreed with him." It was in fact treif.