Do they upset him? Lancelot considers that a moment, tilts his head a little in thought as he does.

"I am not sure what I have lost, so I find it difficult to mourn it."

Which is the truth, but also a careful truth. Lancelot suspects Mab could offer to restore them, yet he does not know if he could afford the price of such a thing. It is true he does not know what he lacks, but equally it does confuse and unnerve him to have such gaps. At the same time, not knowing what fills them makes him unsure if it would be better not to know. Which, he wonders, is better? Ignorance can be bliss.