Doing the MathThe Dhamma is like doing math. There's multiplication, division, addition, and subtraction. If we can think in this way, we'll be intelligent. We know the right time and place for things. We subtract when we should subtract, multiply when we should multiply, divide when we should divide, add together when we should add together. If we multiply every time, our hearts will die from the burden. In other words, we have no sense of enough. No sense of enough means no sense that we're growing old.Anyone with a sense of growing old is a person with a sense of enough. When there's enough, the words, "Okay, that's plenty," can make their way up. If there's not enough, that "okay" can't make its way up because we keep on wanting to take. We've never thrown anything away, let anything go, put anything down. We're always taking. If we can "okay," we're at ease. That's enough.