The doctrines of universal impermanence and the absence of a persisting self are based on an objective view of reality but motivate religious practice. These doctrines mean that all things are constantly changing, that nothing is a fixed entity, and that all existence is relative and interdependent. Realization of these truths helps prevent attachments to the transient phenomena of the world and inspires the wish to avoid harming others and to make each passing moment as valuable as possible for everyone. People who understand impermanence and the absence of a persisting self are unlikely to fritter away their short lives in vain pursuits. Aware of the pricelessness of their material and spiritual heritage, which has been created through the labor, talent, and devotion of countless people, they feel obliged to do what they can to preserve it for future generations. Such people know that precisely because it is impermanent life must not be lived carelessly.
Basic Buddhist Concepts