To put your life in danger from time to time... breeds a saneness in dealing with day-to-day trivialities.

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

Everybody pays lip service to the safety of the aeroplane, but nobody is prepared to pay for it.

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

I never was in such a horrid office . . . It's not very nice to be where people are being swindled all day long, is it?

I'm glad we haven't got newspapers now. It's been much nicer without them.

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.