He was not sure, but liked it. It recurred when they met suddenly or had been...

He was not sure, but liked it. It recurred when they met suddenly or had been silent. It beckoned to him across intellect, saying, "This is all very well, you're clever, we know-but come!" It haunted him so that he watched for it while his brain and tongue were busy, and when it came he felt himself replying, "I'll come-I didn't know."
"You can't help yourself now. You must come."
"I don't want to help myself."
"Come then."
He did come. He flung down all the barriers-not at once, for he did not live in a house that can be destroyed in a day.