He's doing a lovely tribute now, barely able to contain himself.

"Now if you watch this show, and you like this show, that's because of everybody who works here, and I'm lucky to be one of them. But if you watch this show and you also like ME, that's because of my mom…"

I'm sure it will turn up online, but this quote from his earlier hiatus sums it up nicely:

A few days after the announced hiatus, Colbert returned and took a moment to address his brief departure.

Without going into detail, he said simply, "Evidently, having 11 children makes you tough as nails. Confidential to a lovely lady."