23 APR 2018 AT 20:32

We are revolving around the circle of happiness and sadness. At every moment we are in search for happiness
But not a single one of us want the taste of sadness in our life.But without dejection life could be very boring.See The example of earth if there is no change in earth's climate before millions of years ago then there could be no existence of human in earth till now and the gigantic dinosaurs could have been ruling the world.So I would rather say the change between happy and unhappy moment is really good for everything which have an existence in the universe.

- Sajib(Ancient cyborg)