At a time like this, that could still bubble to the surface of his mind?

Yet the thought barely touched the surface of her mind.

Something was trying to reach the surface of his mind.

Yet they kept troubling the under surface of his mind.

She is never far from the surface of your mind.

It rose at last to the surface of my mind.

There's fear just beneath the surface of his mind, she thought.

How much had its coming or going affected more than the surface of his mind?

Just that once, and her face was never again far below the surface of his mind.

But I couldn't make it float to the surface of my mind.