Philadelphia Inquirer: Ralph Roberts, 95, the soft-spoken visionary who in 1963 bought a tiny subscriber-TV system in Tupelo, Miss., and built it into Comcast, the nation’s leading cable company, died Thursday night in Philadelphia. Roberts, who had been in declining health, died of natural causes. “Ralph has been the heart and soul of Comcast for 50 years,” said his son, Comcast president and CEO Brian Roberts, in a note to employees. “He was the greatest influence in my life and a joy for me to work side by side with for over three decades. I speak for all of us when I say he will be greatly missed.”