It might be too difficult to break through to him without doing permanent harm.

After all, it was just an assault, no permanent harm done.

But thank goodness it didn't do me no permanent harm.

There is no permanent harm and it will break down in a few hours at most.

These problems went away on their own and did not cause any permanent harm.

Or, at least, not in ways that cause permanent harm.

She stopped short of doing permanent harm, but allowed herself satisfaction at the act.

He has only one mission, and that is to reach the bridge before his captain can come to permanent harm.

No permanent harm was done but it took me hours to recover the situation.

She's trying not to let a few bad men, or a lot of them, do permanent harm to her self-esteem.