HamrickCE explains light in a manner I have never heard put before. It is quite the eye opener. He is not catholic, I am but, his knowledge of matters biblical is streets ahead of mine; I never studied bible.
After some incredible interventions in my life I am now paying attention to what is to be found written in the bible. I require guidance and I am finding this is as good a place as any. It is a forty five minute talk but, one worth listening to.