It is a very inconvenient habit of kittens {Alice had once made the remark} that, whatever you say to them, they always purr: If they would only purr for 'yes,' and mew for 'no,; or any rule of that sort, she had said, so that one could keep up a conversation! But how can you talk with a person if they always say the same thing?
"It is a very inconvenient habit of kittens" is a quote from Alice, expressing her frustration that kittens always purr regardless of what is said to them. She wishes they would purr for 'yes' and mew for 'no,' so that conversations could be clearer and more meaningful. Alice finds it difficult to communicate when the responses are always the same, making true dialogue impossible.
This remark highlights Alice's humorous observations about...