This document from a Harvard Medical School teaching hospital discusses qualities of excellent clinical teachers and the application of adult learning theories. It identifies that residents spend 25% of their time teaching but often do not feel prepared. Key qualities of excellent teachers include being knowledgeable, enthusiastic, using questions effectively, creating a safe learning environment, giving learners responsibility, role modeling professionalism, showing genuine concern for learners, and providing meaningful feedback. Adult learners need to understand why they are learning, connect new knowledge to past experiences, actively engage in learning, approach learning as problem solving, and see immediate relevance and value.