1. It was the best of times and the worst of times

It was the age of wisdom and also the age of stupidity

It was the age of faith but also of doubt The era

——Dickens' "A Tale of Two Cities"

2. The wood on Theseus' ship was gradually replaced

Until all the wood was no longer the original wood.

Is this ship still the same ship as before?

——The Paradox of the Ship of Theseus

3. Happy families are all the same

Each unhappy family is unhappy in its own way

——Tolstoy

4. Those who fight against monsters

should Be careful not to become a monster

When you stare into the abyss from a distance

The abyss is also staring at you

——Nietzsche's "Beyond Good and Evil"