Madness string 2374

Random mermaid
How do I know I'm me? Suppose I'm not me but just think I'm me? How can I tell if I'm me or not? Who's the 'me' that's asking the question?

Be loyal, be brave, believe in your friends. Believe in everything you have believed. I believe there is good in every person, that everyone deserves a second chance. I believe in fairies and unicorns and in selfless heroes, but I don't believe in you!