In 1948, he had an affair with the wife of a doctor who had saved his life. When the doctor learned of this and his wife returned to her husband's side, Max fled into the future once more. He then reappeared in the early 1960s, where he battled Savitar and was bounced still further forward in time. He spent some years in hiding, but was persuaded by Garrick to return to action against Professor Zoom (who was posing as Barry Allen). In recent years, he has been the mentor of first Wally West and later Bart Allen (alias Impulse). He taught West about the Speed Force, and helped him to access his full speed by encouraging him to break a mental block he had placed on his powers—stopping Wally from being as fast as Barry because he would then have "really" replaced his uncle as the Flash. He also attempted to teach Impulse a measure of patience with varying results. While living with Bart, Max met an aged physician named Helen Claiborne, who turned out to be his daughter from his earlier affair.