I guess if you don't come from money, and work every hour god sends to get enough money to send your son Karting, and he goes on to become the best chance that Britain has of a multiple F1 World champion, you're probably entitled to be a tiny bit arrogant about your achievements?
As for Lewis - I did a charity kart race against him whilst he was still in F3 ES. We had a massive, dicing battle, trading blows and racing lines for.....a whole corner.....after which he disappeared into the distance........