[He knew to talk was laborious for Moriarty. It's part of why Sherlock had kept his side of the conversation brief so that he wouldn't feel obligated to keep going.

But when he did, he didn't interrupt - as he straightens up slightly, his lips pursing into a thin line, weighing each syllable and their meaning. He remembered that dream, that Elysium field. As a vampire, sometimes he felt an urge just not to be... but good lord, in Moriarty's position, it would be much worse.

It was understandable why he'd thought that, would want that. The vampire gave a quiet nod of understanding, getting another glass of water for the other man before returning to his seat.

Sometimes there are no words to say, just listening and understanding is the important part.]