He said a good writing teacher is something like a literary conscience, a friendly critical voice in your ear.

However, such critical voices were a rarity until the 1980s.

We should not be surprised then, given such conditions, that critical voices are now being heard.

The only critical voices raised were those of foreign Communists.

He said he would continue the tradition of writing about television with a critical voice.

I was not surprised given the degree to which this president seems impervious to any critical voices.

Sometimes there are critical voices - older people will ask how we can put things like this in a church.

"Hold your head down," she said in a critical voice.

But it also confirms how weak the critical voices have become.

Sceptical and critical voices will be raised in the debate.