Finally found the speech! It's from the 2001 "Centennial of Flight Kick-Off Event" speech by Marion C. Blakey. It appears that the phrases are portions from the speech (I don't think its continuous). Here are the few lines I was able to spot:

"Without question, flight is represented by countless heroes who have stirred greatness in others. It was a dream that had been waiting to be realized for thousands of years and chased by countless visionaries, scholars, and brave souls. But even as the mass of collected knowledge came to a crucial turning point, it was not until the ingenuity of the Wright Brothers that the puzzle ... solved. Discovery requires deep ... terpretation of knowledge and ..."

"The Wright Brothers are among a league of heroes that inspired the world to follow their dreams with passion, courage, and resolve."

"Orville and Wilbur Wright. Thousands of hours of research, experimentation, and trial led to the eventual success of the Wright Brothers' first flight. Like the"

Most of the rest unfortunately is obscured.