It is not only monks and nuns who can be teachers, but it is most important for a teacher to have the right qualities in order to help and liberate their students. There are many qualities that teachers must have and at the very least, the teacher must be compassionate, must know well whatever they are teaching, and also must be able to keep their commitments purely. Whoever possesses the necessary qualities can be a teacher, but if someone is unqualified, we cannot accept them as our teacher. Teachers themselves should continue with their practices of learning, contemplating, and meditating for as long as it takes to acquire all the qualities of a perfect teacher.