Poems/Phrases: Life is meaningful Looking for any sort of story/fable, poem/epic, phrase/chengyu that expresses that life is meaningful.

It can be 


the hope that life is meaningful
the conviction that life is actually meaningful
the desire that life will become meaningful
or any variation


Just hoping that it will be something that most people will be familiar with.
What about this:
天生我材必有用，千金散尽还复来。