1. "I wish to follow the past, beyond the real knights' steps——in the sleepy wild."

2. "My fate will be closely linked to the moving legends； my Fortune's wheel will be tied with engaging legend. Follow my faith； that would be the only behavior in my lifetime."

3. "Time passes, even if in endless imagination； lethargy runs out, or maybe it would be better to have military successes in the opening world, to carve a name that will last forever."

4. "Sancho, nobody is better than another if he does not do more than another."

5. "Our will is free, not compelled by herbs and spells."

6. "Fortune once favored the brave."

7. "History nurtures the truth； it can compete with time, preserving the old news and stories. It is the sign of the past, the mirror of the present, and the lesson of the future."

8. "I finally realized that I am not a wandering knight, but just an ordinary man."

9. "Only when we do not truly love what we are doing do we consider success or failure."

10. "Fate spins like the wheels of a water mill； yesterday's high ones today bow their heads."

11. "I know recklessness and cowardice are faults； the virtue of courage is the mean between these two extremes. But it is better to be bold than timid, for cowardice is the greater fault."

12. "Spending is nearer to the virtue of generosity than parsimony, and recklessness is nearer to true courage than cowardice."

13. "Love, if the lady is willing, can be easily achieved."

14. "Truth, though frail as a thread, cannot be broken, and will emerge amidst a mass of lies, like oil floating on water."

15. "You are mistaken, Sancho," Don Quixote said, "there is a saying: 'when the head is off, the neck is also off.'"

16. "A man sees the thorns in others' eyes but not the beam in his own."

17. "Blood is inherited from ancestors, but virtue is cultivated by oneself； virtue has its own value, and blood is just an honor."

18. "It is rare for a famous man to be without slander."

19. "You may say you were born in a poor family, but say you are a farmer from generation to generation, and you will not lose your status."

20. "Doing good to scoundrels is like pouring water into the sea."

这些句子展现了《堂吉诃德》中的一些核心思想和情感，包括对骑士精神的追求、对命运的反抗、对爱情和友情的看法，以及对个人荣誉和美德的重视。