I find that many of us have heard about it, and have heard it referred to numerous times over the years...and many of us may have referenced it ourselves.
...but have you actually sat down to watch the entire thing?
You should...it's some of the best 17 minutes of your life you'll ever invest in.
It's ESPECIALLY interesting following Obama's election to the Presidency. You can see what Obama has referenced to in his speeches; especially in his DNC acceptance speech last August. it's fascinating to see where he's channeled MLK and borrowed lines from him, such as "NOW is the time."
Check it out here, all 17 minutes of it...actually, we should know the entirety of this speech by heart. It's arguably the most critical, transcendent, sweeping speech in our nation's history.