If all is impermanent, unsatisfactory, all selfless, then what is the point of existence? One man watches a river flow by. If he does not wish it to flow, to change ceaselessly in accord with its nature, he will suffer great pain. Another man understands that the nature of the river is to change constantly, regardless of his likes and dislikes, and therefore he does not suffer. To know existence as this flow, empty of lasting pleasure, void of self, isto find that which is stable and free of suffering, to find true peace in the world.
"Then," some people may ask,"What is the meaning of life? Why are we born?" I cannot tell you. Why do we eat? You eat so that you will not have to eat anymore. You are born so that you will not have to be born again.
To speak about the true nature of things, their voidness or emptiness, is difficult. Having heard the teachings, one must develop the means to understand.
Why do we practice? If there is no why, then we are at peace. Sorrow cannot follow the one who practices like this.
The five aggregates are murderers. Being attached to body, we will be attached to mind, and vice versa. We must cease to belive our mind. Use the precepts and calming of the heart to develop restraint and constant mindfulness then you will see happiness and displeasure arising and not follow either, realizing that all states are impermanent, unsatisfactorym and empty. Learn to be still. In this stillness will come the true joy of the Buddha.