Just now he was watching the interview between the English king and the leaders of the crowd whom his Grace had been pleased to summon, with an air of mingled amusement and contempt.
"You find the scene strange, Marquis," said the ambassador, glancing at him shrewdly.
"Senor, here in England, if it pleases your Excellency," he answered gravely, "Senor d'Aguilar.

The marquis you mentioned lives in Spain--an accredited envoy to the Moors of Granada; the Senor d'Aguilar, a humble servant of Holy Church," and he crossed himself, "travels abroad--upon the Church's business, and that of their Majesties'." "And his own too, sometimes, I believe," answered the ambassador drily.
"But to be frank, what I do not understand about you, Senor d'Aguilar, as I know that you have abandoned political ambitions, is why you do not enter my profession, and put on the black robe once and for all.

What did I say--black?
With your opportunities and connections it might be red by now, with a hat to match." The Senor d'Aguilar smiled a little as he replied.
"You said, I think, that sometimes I travel on my own business.

Well, there is your answer.

You are right, I have abandoned worldly ambitions--most of them.