It is a thing your future master will need to know.

I went on into the book; it was the kind of knowledge a master would need, all right.

A master doesn't need to ill-treat them to have trouble on his hands, they're very independent.

The master of the night would need no aid.

My master really needs to be taken to a hospital, as soon as possible.

I would kill you now if our master did not need us both.

A great master like Nevyn doesn't even need the names and images any more, for that matter.

No matter how much my master needs me, I'm just a turtle.

Perhaps his comforts are beginning to grasp what their master really needs to hear.

My master needs the activity reports on Resistance action for the last month.