Star Trek years in his new memoir, Make It So.Stewart, 83, is best known for playing Captain Jean-Luc Picard in Star Trek: The Next Generation from 1987 to 1994. He reprised the role in movies and more recently in Star Trek: Picard.Before this, Stewart had a successful career in the theatre. So much so that his pal, McKellen, 84, cautioned him from moving across to a major TV franchise such as Star Trek.“When I told him I was going to sign the contract, he almost bodily prevented me from doing so,” writes Stewart.“‘No!’ he said.