For 50 years, Don Ritchie was the guy with the most unusual hobby in Australia. When other men were learning to barbeque or boomerang or whatever it is Australians do all day, Ritchie sat at home, quietly looking out the window. That might not sound so unusual, but Ritchie had a very specific purpose in mind. He and his wife lived at the top of a Sydney suicide hotspot. And Ritchie had made it his mission to stop as many jumpers as possible.From 1964 to 2012, he watched over this stretch of cliff face, wandering down to anyone who looked upset and simply asking: “Can I help you in some way?” Amazingly, this low-key approach seemed to work. When he died last year, Ritchie was credited with saving a minimum of 164 lives—an accolade usually reserved for war veterans and Superman. Again, that’s a minimum, some people estimate the number is much, much higher. Either way, Ritchie’s combination of insane determination and calm patience saved hundreds of families from losing someone they loved.