“Imagine the time when people had to take a couple of hours getting across here in a little, dirty, smoky steamboat, mingling their sorrows and their sea-sickness in one common misery! I really think this Channel Bridge is worthy even of your admiration. Come now, you have not admired anything yet”—

“Pardon me,” said Alan, with a look and a laugh that set Serge’s teeth gritting against each other, and brought the ready blood to Olga’s cheeks; “on the contrary, I have been absorbed in admiration ever since we started.”

“But not apparently of our engineering triumphs,” replied Olga frankly, taking the compliment to herself, and seeming in no way displeased with it. “It would seem that the polite art of flattery is studied to some purpose in Aeria.”

“There you are quite wrong,” returned Alan, still speaking in the same half-jocular, half-serious vein. “Before all things, we Aerians are taught to tell the absolute truth under all circumstances, no matter whether it pleases or offends; so, you see, what is usually known as flattery could hardly be one of our arts, since, as often as not, it is a lie told in the guise of truth, for the sake of serving some hidden and perhaps dishonest end.”

The blow so unconsciously delivered struck straight home, and the flush died from Olga’s cheek, leaving her for the moment so white that her companion anxiously asked if she was unwell.

“No,” she said, recovering her self-possession under the impulse of sudden anger at the weakness she had betrayed. “It is nothing. This is the first time for a year or so that I have travelled by one of these very fast trains, and the speed made me a little giddy just for the instant. I am quite well, really, so please go on.

“You know, that wonderful fairyland of yours is a subject of everlasting interest and curiosity to us poor outsiders who are denied a glimpse of its glories, and it is so very rarely that one of us enjoys the privilege that is mine just now, that I hope you will indulge my feminine curiosity as far as your good nature is able to temper your reserve.”

As she uttered her request, Alan’s smiling face suddenly became grave almost to sternness. The laughing light died out of his eyes, and she saw them darken in a fashion that at once convinced her that she had begun by making a serious mistake.

He looked up at her, with a shadow in his eyes and a slight frown on his brow. He spoke slowly and steadily, but with a manifest reluctance which he seemed to take little or no trouble to conceal.

“I am sorry that you have asked me to talk on what is a forbidden subject to every Aerian, save when he is speaking with one of his own nation. I see you have been looking at these two golden wings on the band round my head. I will tell you what they mean, and then you will understand why I cannot say all that I know you would like me to say.