"We could not understand how it was that the best scientists could not fly a machine. We thought that they must be working on the wrong principle."

"The greatest thing in either of our lives has been the privilege of working together."

"Learning the secret of flight from a bird was a good deal like learning the secret of magic from a magician—something the magician won't tell, and the bird can't tell."

"The problem of flight is a problem of equilibrium."

"It is not the man who has done the most, but the man who has done the best, who is most deserving of praise."