Existence; Reality

Twice Moses states in our Parshah that "there is none else"--that nothing exists aside from G-d. Are these just words, or do they mean something that we can understand?

So I don't exist. Or I don't exist and do exist at the same time. So what? I still have to get up in the morning, I still have to deal with my credit card balance, my mother-in-law, and this guy whose elbow is crushing my ribs on this crowded subway car. ...