she recently explained what it means

"There's so much negativity in the world and what you only need to hear is all the love," Cyrus, 17, just told me from New York City, where she's in the middle of the big promo tour for her new album, Can't Be Tamed. "People try to say to me, ‘I just heard someone say this or that about you,' and I just ignore it because it's irrelevant. Love is what makes the world go around, and that's all we need to focus on."