[ The sentimentality may not be something Sebastian feels for his own kind, but objectively, he can understand and appreciate it here. Just from how Emet-Selch phrases his answer in return, Sebastian feels that he understands much better why he had been interested in his "people" at all.

...It also has him realizing that his own answer was probably a little less than satisfying. Ah, well. ]

Then I shall remember it as well.

[ And considering what had been said, he adds: ]

I can promise that I will not forget it. And though my stories are rather boring, if you should ever wish to share one, I would be glad to listen. Not to impose, of course. Simply to offer, since you feel more fondness for your people than I ever have for mine.