I’m listening to him right now from his website archives.
I bought one of his books several years ago, with really no idea of who he was and was quite impressed.
Deliver Us From Evil is the book I have and I highly recommend it.
On the inside of the book jacket the first paragraph reads, “Evil does not come only in the garb of a masked murderer,” writes Ravi Zacharias. “In its most cunning and destructive form, evil comes as an idea dressed in sophisticated attire, rationalized by the prophets of the wind.”