<em>Four spectrums of the teaching:</em> ethics, immersion, wisdom, and freedom. <em>Four powers:</em> energy, mindfulness, immersion, and wisdom. <em>Four foundations:</em> A mendicant develops the basis of psychic power that has immersion due to enthusiasm, and active effort. the foundations of wisdom, truth, generosity, and peace. <em>Four ways of answering questions:</em> There is a question that should be answered categorically. There is a question that should be answered analytically. Ther