“Who is in charge of the clattering train?
The axles creak and the couplings strain,
and the pace is hot and the points are near,
and sleep hath deadened the driver's ear,
and the signals flash through the night in vain.
For death is in charge of the clattering train.”

Edwin J. Milliken, quoted by Winston Churchill in the debate on the air estimates in the House of Commons, 19 March 1935