The classic quote from "The Godfather" was enlightening after reading it:

1. A soft heart without boundaries will only allow the other party to take advantage of you; unprincipled kindness will only allow the other party to do whatever they want.

2. Don’t hate your enemies, it will affect your judgment.

3. You made this decision, and this is the price you pay.

4. Those who see the essence of something in one second and those who spend half a lifetime unable to see the essence of something clearly have different fates.

5. Great people are not born great, but show their greatness in the process of growth.

6. Never let others know your true thoughts, nor speak out your ideals easily, nor give others the opportunity to laugh at you.

7. Stay close to your friends, but stay closer to your enemies so you can understand them better.

8. It took me a lifetime to learn two words: be careful.