“We have to let learners decide when they want to ask questions. It often takes them a long time even to find out what questions they want to ask. It is not the teacher’s proper task to be constantly testing and checking the understanding of the learner. That’s the learner’s task, and only the learner can do it. The teacher’s job is to answer questions when learners ask them, or to try to help learners understand better when they ask for that help.”
— John Holt