"What's right isn't always popular. What's popular isn't always right."

Albert Einstein 

- This quote is stating that what "cool" people think is "cool" is not always a right decision to make. And if people do right things other people may not find that cool. So it does matter if you're doing something positive and if you're alone at it because you're doing something you enjoy. Also not because "cool" people are drinking or smoking doesn't make it good to do. So you should follow your own path because it all depends on you.