Close, though it was said by Wilbur, not Orville.
Still, the results of 1901 were discouraging. Wilbur wrote:
"When we left Kitty Hawk at the end of 1901, we doubted that we would ever resume our experiments. Although we had broken the record for distance in gliding, and although Mr. Chanute, who was present at that time, assured us that our results were better than had ever before been attained, yet when we looked at the time and money which we had expended, and considered the progress made and the distance yet to go, we considered our experiments a failure. At this time I made the prediction that men would sometime fly, but that it would not be within our lifetime."
Wright Brothers History