There is no doubt that the Harry Potter series has loads of beautiful quotes and words of wisdom. However, I think the following are the most important.
1. "There is no good or evil; only power and those too weak to seek it." Harry Potter and the Sorcerer's Stone
2. "To the well organized mind, death is but the next great adventure." Harry Potter and the Sorcerer's Stone
3. "It takes a great deal of bravery to stand up to our enemies, but just as much to stand up to our friends." Harry Potter and the Sorcerer's Stone
4. "It is the unknown we fear when we look upon death and darkness, nothing more." Harry Potter and the Half- Blood Prince
5. "Fear of a name increases fear of a thing itself." Harry Potter and the Sorcerer's Stone
6. "Curiosity is not a sin... But we should exercise caution with our curiosity.. yes, indeed." Harry Potter and the Goblet of Fire
7. People find it far easier to forgive others for being wrong than being right." Harry Potter and the Half- Blood Prince
8. "You fail to recognize that it matters not what someone is born, but what they grow to be." Harry Potter and the Goblet of Fire
9. "It is our choices, Harry, that show what we truly are, far more than our abilities." Harry Potter and the Chamber of Secrets
10. "It does not do to dwell on dreams and forget to live." Harry Potter and the Sorcerer's Stone