The thing most worth doing in this modern world [is to] create jobs that men can work at, and be proud of, and make money by their work.

The happily married man with a large family is the test pilot for me.

Like some infernal monster, still venomous in death, a war can go on killing people for a long time after it’s all over.

It's no good going on living in the ashes of a dead happiness.

It has been said that an engineer is a man who can do for ten shillings what any fool can do for a pound; if that be so, we were certainly engineers.

If what they say is right we're none of us going to have time to do all that we planned to do. But we can keep on doing it as long as we can.

Differential equations won't help you much in the design of aeroplanes - not yet, anyhow.