Antigone is a tragedy by Sophocles written in or before 441 BC. Antigone expands on the Theban legend that predates it, and it picks up where Aeschylus' Seven Against Thebes ends.
Some other themes that appear in Antigone include:
The actual meaning of life is to fulfill your purpose in life and accomplish your goals. What I mean by this is, everyone has a purpose, of why they are living. None of us will be here if we all didn't have a purpose