Nice short video. I was dubious about the accurateness of the quote "Let no one ignorant of geometry enter here" (as a sign at the entrance of Plato's academy)... I expected "mathematics" instead of "geometry", because I thought "geometry" would sound too much down-to-earth (so to speak) for Plato... My mistake. While web-dwelling on this, I found this gem: a great exploration of the sources for this quote:http://www.math.ucdenver.edu/~jloats/APresentations_2010/PlatosAcademy_Jim%27s10.ppt.pdf
Be sure to check the second link, not just the video (you lazy bum)!