Star Trek legend and veteran author William Shatner discusses the meaning of life, finding value in work, and living well whatever your age. "I have always felt," William Shatner says early in his newest memoir, that "like the great comedian George Burns, who lived to 100, I couldn’t die as long as I was booked." And Shatner is always booked. Still, a brief health scare in 2016 forced him to take stock. After mulling over the lessons he's learned,...