"Your hair wants cutting," said the Hatter.  He had been looking at Alice for some time with great curiosity, and this was his first speech.

"You shouldn't make personal remarks," Alice said with some severity; "it's very rude."

The Hatter opened his eyes very wide on hearing this; but all he said was, "Why is a raven like a writing-desk?"

…"Have you guessed the riddle yet?" the Hatter said, turning to Alice again.

"No, I give it up," Alice replied:" what's the answer?"

"I haven't the slightest idea," said the Hatter. 

"Nor I," said the March Hare.