On "Super Soul Sunday", Oprah has talked to the world's top spiritual thinkers and asked them some of life's biggest questions. This week, we're looking back at the answers that inspired so many aha! moments. Watch as teachers like Iyanla Vanzant, Marianne Williamson and Deepak Chopra answer four profound questions:

How Do You Define God?


What Is the Soul?


Finish These Sentences: I Believe... Love Is... The World Needs...


What I Know For Sure Is...