The memory of those years was slipping away from him.

Each day, the memory of it slips further from me.

Sometimes her memory slipped up and she got confused, poor old soul.

The next day the memory slips farther, until very little is left at all.

When does memory slip the bonds of reality to become a wish?

But she's not letting her memory slip away without a fight.

But already the memory of that mysterious magic was slipping from his mind.

But the memory slipped back to the recesses of her mind.

"My memory is slipping," said the senator, at a loss.

Is the audience feared to be of an age when memory slips?