"The only bird that could speak told us what it knew, but we didn’t understand its language."

"The difficulties were great, but our faith was greater."

"We have had considerable difficulty in getting the engine to work properly."

"It is our view that morally the world owes its almost universal use of our system of lateral control entirely to us. It is also our opinion that legally it owes it to us."

"We kept at it, and we kept on learning."