Openings: The 4 Knights

I watched a video by GM Roman Dzindzichashvili called "The Four Knights Opening: Intro!"  It was very informative and I wanted to get the main line down here so I could remember it.  Roman says the 4 Knights opening is an easy one to learn and easy to play for white.  I like his videos, he plays out variations and shows you why the lines are best.

The main line: