Money is very important but the truth is that it can't buy you everything. When you realize this you will stop the endless pursuit of money and focus on more important things.
Like Ogoo said, money can't buy you friendship, at least not the true one. Let me add this that you earn good friends, you don't buy them over. Good friends are more important currency than money because true friendship can get you everything money can get you and much more than what money can get you. And like greenrun's comment, so many of us just need a dollar. Lol. But we still know that money can't buy us everything.