Three marks of existence

The three marks of existence are a way of understanding how the world works. They are three ideas that help us understand why things are the way they are.
The first mark of existence is that nothing lasts forever. Everything changes over time, and nothing stays the same.
The second mark of existence is that nothing is totally independent. Everything is connected and influences other things around it.
The third mark of existence is that life is full of suffering. Bad things happen, and it's part of life. We can't avoid it, but we can work to make it better.
These three marks of existence help us understand the world and how life works.