When we are born, we cried and the world rejoiced. we should live our lives so that when we die, the world cries and we rejoice?

Yes. Emerson speaks of this in many of his excerpts. To live with compassion, truth, maturity. To live and To have lived well when death comes to take us. We rejoice in both life and in death as both are beauty that we have no control over time over love-life over death. So give the world something to remember you by from your life and even after your death