Really? You really should read the whole thing. Even if you don't agree with it, the Galt speech will tell you all you need to know about the philosophy of objectivism. Agree with it or not, it's not something you should ignore. There are certain political movements that have hooked their wagons up to it and are riding off in to the sunset. That makes it, at least, relevant.
"With the collapse of the nation and its rapacious government all but certain, Galt emerges to reconstruct a society that will celebrate individual achievement and enlightened self-interest, delivering a long speech (seventy pages in the first edition) serving to explain the novel's theme and Rand's philosophy of Objectivism, in the book's longest single chapter."
Maybe thats a good thing....