A quintessential scientist who patiently worked on his calculations until almost the very end, Riazuddin published his last physics research paper in 2013—a remarkable feat for an 82-year-old. For one who had helped set Pakistan on its nuclear path, the farewell Riazuddin got from a bomb-loving nation was surprisingly low key. The country’s powerful nuclear and security establishment was clearly not willing to celebrate a man who had rebelled against it.

