Ophelia, as her wits unwind, uses the language of flowers to express what her modesty as a young maid won’t let her say directly. She says, “There’s rosemary, that’s for remembrance. Pray you, love, remember,” to her brother Laertes, perhaps as a stand-in for the lost Hamlet. Rosemary has long been renowned for its stimulating effects on the brain, and modern science seems to be catching on. I remember well a roommate in Santa Cruz who burned rosemary sprigs to …