The BBC has the obligation to think big. And at the moment, that clarion call sounds an uncertain note to me.

Ever more people are alert to the challenge of global poverty and global warming. We know that solutions are at hand. We will not sleepwalk into catastrophe. We have the capacity to forsee and forestall, and I believe we will find the will to act

Not every programme dealing with issues of global significance has to be fronted by last weeks winner of Have I Got News For You-but I suppose you might be wrong.

Programme names have been changed, and we have Andrew Neil saying he won't be using long words.

I ought to rejoice in the fact that our principal rival has died, but I don't.

The BBC produces wonderful programmes; it also produces a load of old rubbish.

The BBC has the obligation to think big. And at the moment, that clarion call sounds an uncertain note to me.