The world is impermanent and nothing lasts forever!
All things in the world are impermanent, subject to change and eventually destruction. Everything from the sky, clouds, and the Earth, to plants, animals, and humans are all regulated by the law of impermanence; they change in even a single ksana (the smallest possible unit of time) and follow the cycle of formation, existence, decay, and emptiness”. The Earth is impermanent at every moment. Earthquakes and tsunamis can happen suddenly and unpredictably.
Hardly can we see the impermanence of everything if we do not learn Buddhism; meanwhile, we perceive them as permanent. We might assume that a person will live a long life, but do not realize that they could pass away suddenly. Our bodies change every day but we tend to believe that nothing changes and our bodies are still as usual. “I'm in my normal state, so why do I have this disease now?” … Our mind often clings to the misconception that everything is permanent whereas the reality is opposite. We are so ignorant and deluded, so we suffer. This delusion is deeply ingrained in our storehouse consciousness, which creates attachment, confusion, and ignorance.
Since we believe in the permanence of this world and everything, we mourn and suffer when confronted with impermanence. In contrast, understanding that everything is subject to change will reduce our attachment and suffering. When learning Buddhism and understanding the concept of impermanence, we may only believe it but not yet fully realize it. We must cultivate until our mind truly delves into the depth and clearly sees every single ksatna of birth and destruction as well as the changes of all laws and states of mind. It's when we truly realize the law of impermanence. To realize the law of impermanence is to realize the path of enlightenment.”
— Thay Thich Truc Thai Minh.