Again therefore Jesus spoke to them, saying,
I am the light of the world; he that follows me shall not walk in darkness,
but shall have the light of life.

Eric Metaxus is a radio personality, author, and intellectual who I've been encouraged by many times. I would highly suggest the following video. (You'll want to skip past the first 36 minutes or so because it's just announcements for the church where he was interviewed.)

Watch this YouTube video of a sit-down interview of Eric.