Here is the classification of the given statements:
Paradox:
- You must spend money to save money.
- The more you have, the less satisfied you are with each one.
- Everyone is equal, but some of us are more equal than others.
Not a paradox:
- The bird swam deep under the water.
- There is no problem that cannot be solved with communication.
- Even though I was tired, I stayed awake.
Feel free to rearrange them as needed based on this classification!