‘Pass on, sir,’ he said.

I pressed the lever, and set out on my mad race across an Empire to Vienna. I had nothing to eat or drink. I had no shields for my eyes; the Russian soldiers must have removed them while the car was in their hands. I was utterly unprepared for my terrible journey. But some intuition warned me that every moment was precious, and I kept my splendid machine at full pressure for the whole five hundred miles.

I will not attempt to describe that nightmare ride. Late in the evening of the following day, I alighted at the gate of the palace of Schönbrunn, worn-out, my face and hands chapped and bleeding, my eyes half-blinded with dust, and my strength nearly gone.

‘The Emperor! Take me to the Emperor!’ I gasped to the first person I met. ‘It is life or death!’

I was conducted into the presence of a chamberlain, who sought to impose all sorts of obstacles.

‘You cannot see his Majesty now. I dare not intrude upon him. He is closeted with the Archdukes. It is a Habsburg Family Council.’

‘My God!’ I cried out. ‘You have given me ten thousand reasons for insisting! If it costs my life, I must interrupt his Majesty.’

My violence cowed the official. He conducted me, or, in fact, supported me, for I was almost too weak to stand, to the door of the Council Chamber.

‘Go in, if you must,’ he said. ‘For my part, I dare not announce you.’

I turned the handle of the door, and staggered into the room.