“I want to be alone.” Greta Garbo spoke that famous line from the 1932 movie Grand Hotel, and it stuck to her like Gorilla Super Glue. Ms. Garbo was considered one of the outstanding beauties of her time. The press and Hollywood pursued her for magazine covers and acting roles, but she rarely said yes. Not because she was a recluse, as people thought, but because, in her words, “I want to be let alone.” In short, Ms. Garbo relished solitude.