Have you ever pondered about the meaning of life? Is there any meaning to life? How has the universe formed? Where did life come from? What is time? Has the future already happened? Can we travel back in time? Is what we think the beginning is actually the end? And does all this begin at the ending?
Are you ready to know the answers for the ultimate question? If not, stop now. Don't read any further!
If you are ready, the answer is ...
Read The Hitchhiker's Guide to the Galaxy.
On a serious note, The Brief History of Time by Stephen Hawking helps you ponder on these questions. The last two questions on beginning and end is inspired by T.S.Eliot.