How to Correctly and Reasonably Guide the Manas?

When the mind consciousness learns the Dharma of suffering, emptiness, impermanence, and non-self of the world of the five aggregates, deliberation (manasikāra) upon it will permeate and guide the manas, so that it no longer grasps at and pursues these conditioned phenomena that arise and cease and are impermanent. When studying any Dharma teachings, one must always deliberate upon them to permeate the manas; once the manas understands the principles of the Dharma, its grasping and attachment will gradually diminish. Correct contemplative practice (vipaśyanā-caryā) that accords with reason and the Dharma is precisely the effective way to guide the manas.