Poems with mixed feelings of sadness and joy

The road is long, life is long, there are many good things to go, and there may be bad things behind it. It means having a diploma. He will see things, not just one side. An ill-fated life means a bumpy life and repeated setbacks. Bitterness and pleasure are divided into two stages, which means that they are generally bitter and have half the happy time. That is, everyone will die sooner or later, and everyone is a passer-by on the road to death and will never come back.