Herodotus, 9.82

After the Greek's ultimate victory over the remaining Persian invasion at the Battle at Plataea:

It is also reported that Xerxes had left his tent to Mardonios when he fled from Hellas, and that when Pausanias saw these quarters of Mardonios and how they were furnished with embroidered draperies, he ordered the bread bakers and the cooks to prepare a meal for him like those they had made for Mardonios.  When they had carried out their orders and Pausanias saw the golden and silver counches with sumptuous coverings and the tables, also of gold and silver, all set out with a magnificent feast, he was struck with wonder at the good things lying before him, and then, as a joke, ordered his servants to prepare a Laconian meal.  When the banquet was ready, the difference between the two was great indeed, and Pausanias laughed, and then sent for the generals of the Hellenes.  When they had all come to him, Pausanias, as he pointed to each of the meals that had been served, said, "Men of Hellas, I have brought you here together, because I wanted to show you what an idiot the leader of the Medes was.  This was his lifestyle, but he came to us, who have this miserable way of life, in order to deprive us of it."  That is what Pausanias is reported to have said to the generals of the Hellenes.

Civilizational confidence.