The Conversation: Stephen and Lucy Hawking

June 8, 2010— -- While in New York City to be honored by the World Science Festival, celebrated physicist Stephen Hawking sat down for an interview with ABC News' Diane Sawyer.

The interview touched on everything from the mysteries of the universe to the definition of God. When asked by Sawyer about the biggest mystery he'd like solved, Hawking replied, "I want to know why the universe exists, why there is something greater than nothing."

And because every answer from Hawking is a complex and fascinating reply, we felt every answer deserved special attention. So in today's Conversation, hear more from Sawyer's interview with Hawking. How does he reconcile the idea of religion and science? And what does he think are the best and worst decisions of our generation?

Also hear from Hawking's daughter, Lucy, who shares what she thinks her father's greatest accomplishments have been. Lucy also shares stories of her father's sly sense of humor and great capacity to overcome obstacles that would topple the average man.

All this and more in today's Conversation.