Answer:
Thirst
Explanation:
Thirst can take on several meanings that cause this riddle to make even more sense than it would if thirst were only the urge to hydrate. A thirst for knowledge is the desire to learn more. This type of thirst is satiated by a flow of new information gleaned through learning. Feeding the thirst for knowledge awakens more curiosity in the individual.
Conversely, physical thirst disappears when given a drink since the body does not immediately require hydration as it did when the brain transmitted the feeling of thirst.
