不变
In the internet industry, the only constant is change itself.
In science, the only constant is change.
The past is not fixed; it shifts with our retelling.
Topology is the study of the properties of a figure that are unchanged by any deformation.
The world is in a constant state of flux. Nothing remains the same from one moment to the next. You can never step into the same river twice.
The only constant in life is change.
The only thing that is constant is change.