Dear Polly,

I liked your comments on "The roadhog right" in today's Guardian. How they contrast with the editorial in yesterday's Daily Telegraph ("Assaults are up – on the poor old British motorist"), which prompted a written response of my own ("Speed limits and the "humble motorist").

I suggested to you in a previous email that you were wasting your time criticising the Conservative Party. The same applies to the "The roadhog right". Although, I do it myself.

The mentality, values, attitudes and aspirations which these people embody and defend very largely created - and continue to dominate - the world in which we live. The likes of you and me protest and criticise the inhumanity, unfairness and non-sustainability of it all - but to no avail.  The steamroller of "progress" flattens all before it. Some plant small trees on the tarmac, making the runway a little prettier and more pleasant than it would otherwise be; but the giant planes still come thundering along, while the tarmac continues to be extended and the planes become larger and more numerous.

If there is any hope of us saving the world - and as absurd an inconceivable as it may seem, this is more-or-less what is at stake - we (those of us with a very different mentality, and values, attitudes and aspirations, on which a truly humane, fair and sustainable society and its economy could be based) have to stop criticising existing society and start creating an alternative.

We are like grown children, criticising our parents for their way of life, but still living under their roof and dependent on their financial support. It is time we moved out and set up home (society) on our own - before our parent's one collapses around us.