It comes down to pride. If you say he has insecurities, you don't prey on them by correcting him all the time. No one likes that. You're his W not his teacher. If you did want to correct him in some way, you can change the way you tell him without sounding like you're teaching him a lesson. Something like... "I think you're right, but I've also heard that ..."
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.