1. We always feel that we lack something and are not satisfied because we lack gratitude for what we have got. -daniel defoe's novel Robinson Crusoe, the "father of novels" in Europe

2. It is useless for a person to just sit there and think about what he can't get. -Robinson Crusoe by daniel defoe, the "father of novels" in Europe

3. Everything in the world is the most valuable only if it is useful. Anything that accumulates more should be given to others; What we can enjoy is at most what we can use, and it is useless to have more. -Robinson Crusoe by daniel defoe, the "father of novels" in Europe

4. I hope everyone in the world will learn a lesson from my most unfortunate situation, which is that in the most unfortunate situation, we can also compare the advantages and disadvantages and find something to console ourselves. -Robinson Crusoe by daniel defoe, the "father of novels" in Europe

5. How fickle people's feelings are in different environments! What we love today is often what we hate tomorrow; What we pursue today is often what we escape tomorrow; What we hope for today is often what we fear tomorrow, and we may even be scared. -daniel defoe's novel Robinson Crusoe, the "father of novels" in Europe

6. Waiting for disaster is more difficult and painful than the disaster itself, especially if you can't escape this disaster and have to wait for it, you can't get rid of this fearful fear. -Robinson Crusoe by daniel defoe, the "father of novels" in Europe.