Everything comes out of nothingness and goes back into nothingness. Hence there is no need for attachment, because attachment will bring misery. Soon it will be gone. The flower that has blossomed in the morning, by the evening will be gone. Don't get attached; otherwise in the evening there will be misery. Then there will be tears, then you will miss the flower. Enjoy while it is. But remember, it has come out of nothing, and it will go back to nothing. And the same is true about everything, even about people.