She had looked wildly about for the source of the internal voice, but had seen nothing.

The demon paused before answering, as though listening to an internal voice.

His two internal voices have been at war during some matches.

Contemplation attempts to calm the internal voice by various means.

He strained to hear the nagging internal voice, but there was nothing.

If your goal is to make great paintings, then you listen to an internal voice, to yourself.

As it usually did when he was feeling sorry for himself, his internal voice spoke up, taking him to task.

And, he could admit privately, because some internal voice had told him this was the place.

It felt very similar to his own internal voice.