From Zen Pencils:
Growing up in the Bronx in New York, Stanley Kubrick was terrible at school and often skipped class to go to the movie theatre. He soon developed an interest in photography, teaching himself how to use the camera his father gave him as a gift. Similarly, Kubrick didn’t have any formal education in directing and taught himself all aspects of filmmaking. Kubrick on making his first short film, Day of the Fight in 1951:
“I was cameraman, director, editor, assistant editor, sound effects man—you name it, I did it. It was invaluable experience, because being forced to do everything myself I gained a sound and comprehensive grasp of all the technical aspects of filmmaking.”
By the age of 31, Kubrick had already worked as a photojournalist at Look magazine for five years (check out some of his amazing photos) and directed four feature films. In 1960, he was hired to direct the most-expensive film ever made at the time, Spartacus. Kubrick butted heads with Kirk Douglas, the leading-man and producer, over the film’s direction and the bad experience made Kubrick vow that he would have complete creative control on all of his future films.
Kubrick is often described as an eccentric thanks to the stories about his obsessive attention to detail, treatment of actors, personality quirks and reclusiveness. But these anecdotes are overshadowed by his ground-breaking movies, technical expertise and the opinions of those close to him, who described him as a warm, loving and gregarious genius of a man.
The quote used in the comic is taken from a 1968 Playboy interview Kubrick did soon after the release of 2001: A Space Odyssey. You can read the context of the question in this Brain Pickings article.