If we had to pick just one endlessly quotable Robin Williams movie, it would have to be "Dead Poets Society." The 1989 classic -- centered on a group of all-male, buttoned-up prep school students and their radical new English teacher (Williams) -- is filled to the brim with life-affirming gems and inspirational quotes, and features Williams at his irreverent best.

So, in celebration of a man who did, indeed, seize the day and make his life extraordinary, let's take a look back at some of the late Oscar-winning actor's most stirring and enlightening "Dead Poets Society" moments.