The author recalls how
Ajaan Fuang
taught meditation to his students: he would give them just enough instruction to stay on-track, but would rarely "certify" them as having attained this or that level of jhana, thereby motivating them to develop self-reliance and ingenuity in their meditation. In the words of Ajaan Fuang: "If I have to explain everything, you'll get used to having things handed to you on a platter. And then what will you do when problems come up in your meditation and you don't have any experience in figuring things out on your own?"
A printed copy is included in the book
Purity of Heart