In Philip K. Dick's novel "Do Androids Dream of Electric Sheep?" Humans use a device called a Penfield Mood Organ to artificially dial in emotional states, and use "teaching machines" to absorb pre-programmed knowledge directly into their brains. Users dial in a specific three-digit code corresponding to an exact emotional state (e.g., a desire to watch TV, a feeling of absolute creative inspiration, or a desire to feel rage, wife can program herself to be happy). He was such an Aquarius moon it is too on the nose. Favorite sci-fi writer.