But that had been different, some part of his mind insisted.

I did what I had to do, part of his mind insisted.

The rational part of her mind insisted that she shouldn't have.

That's not quite true, part of her mind insisted, up till now he's always let you be your own person.

All the same, one part of his mind insisted on proceeding with an estimate.

Go after him, one part of Sarek's mind insisted, but he could not.

"He's dead," the part of her still under the dream spell insisted.

The large rational part of mind still insisted it was.

You saw it, part of his mind insisted, but had he?

They can't be buildings, a part of his mind insisted.