A teacher is one of three components of learning: the teacher, the learner, and the learning context. The role of a teacher should be shaped but not pre-determined by a theoretical framework. Instead the teacher must respond to the requirements of individual learners in unique contexts. At times, a teacher is a guide, an instructor, a questioner, an observer, a coach, or even an adversary. While teachers play an important role in the learning process, ultimately learners must be responsible for their own learning. Success in learning is the result of hard work, persistence, and recognizing and taking advantage of learning opportunities. Finally, as much of learning is non-verbal, teachers must model the behaviours, attitudes, approaches to learning, and work ethics they expect of their learners.