Just a quick note before you click: as you're reading the speech, when you see italicized stuff in parentheses (like this), it's something the audience is saying, not Dr. King. When you see italicized stuff in brackets [like this], it's something the audience is doing, like clapping. Which they should. It's a good speech.
Now grab a canteen and put on your hiking boots: it's time to go to the mountaintop.