Committing wrongdoings, being confused and remaining in ignorance are three of the major problems of sentient beings in our contemporary world. The Buddha will teach when these problems afflict the sentient beings in our world. However, if the beings are not ill, there will be no need for the Buddha to teach. The Diamond Sutra says, “in the end we even have to lay aside the Buddha’s teachings, let alone the worldly teachings”. When beings are well, the teachings are unnecessary and introducing them might even lead to more problems. This is similar to a healthy person taking medicine every day and eventually falling ill.
Self-discipline cures our body, deep concentration cures our mind and wisdom cures our behavior. Therefore, a person who practices Buddhism is wise in thought, speech and behavior. So how could such a person be unhappy?