I don’t know if it’s the best of all time, but I really enjoy this from Common ('Sixth Sense’):

I start thinking, how many souls hip-hop has affected
How many dead folks this art resurrected
How many nations this culture connected
Who am I to judge one’s perspective?
Though some of that shit y’all pop true it, I ain’t relating
If I don’t like it, I don’t like it, that don’t mean that I’m hating