Basics of Buddhism

Something I remembered from the Diamond Sutra recently:

All conditioned phenomena
Are like a dream, an illusion, a bubble, a shadow
Like the dew, or like lightning
You should discern them like this

Translation by Professor Charles Muller. The term "conditioned phenomena" means all things that come into existence: people, thoughts, feelings, trends, planets, etc. Because it comes into existence, it will also fade. All good things must come to an end.