To me, the very idea of a blank mind seems to be a contradiction in terms.

He ate slowly and with a nearly blank mind.

With a blank mind he looked quickly back at the sack.

A. A bare wall is like a blank mind.

We approached the case, you remember, with an absolutely blank mind, which is always an advantage.

A blank mind, a clean slate; a white sheet, waiting to be filled with images.

She stared at it for a long moment, her mind tired and blank.

We can record your memories and play them into the clone's blank mind.

The mind's never totally blank, not even when a person sleeps or is unconscious.

He was free to stand in the doorway and enjoy man's richest luxury, a blank mind.