Holmes and Watson in “Unfinished Business”

I'm not sleeping. I'm just reviewing the details of the case in my mind.

Watson

I'm sorry. Were you talking to me? Because I thought I was just a cavernous expanse between two ears.

You mustn't be so sensitive, Watson. The service you're providing is quite valuable. For a brief stretch in London I talked only to a phrenology bust I kept in my study. I named him Angus. It wasn't the same. I realized that when it came to listeners I preferred animates to inanimate. Quite a breakthrough, really.

Watson

Angus. I'm glad I made it to the "animate" category.