Conjure Wife by Fritz Leiber

Sunlight made a bright, creamy design on the drawn blind. Filtered sunlight filled the bedroom, like a coolly glowing liquid. The birds were chirruping importantly. He closed his eyes again and stretched luxuriously.

Let's see, it was about time he got started on that article for the _Journal_. And there was still some work to do on the revision of his "Textbook of Ethnology. " Lots of time, but better get it out of the way. No telling when the government would want another brochure. And he ought to have a serious talk with Bronstein about his thesis. That boy had some good ideas, but he needed a balance wheel. And then his address to the Off-campus Mothers. Might as well tell them something useful --