This may come as a surprise to many but politicians can and do say interesting and important things.  For those involved in communications, especially lobbying, really understanding what they are saying can make or break a campaign.

I was very pleased this week to announce the launch of my latest book, the Dictionary of Labour Quotations.  A book of quotations may not, on the face of it, seem like a very exciting proposition. Going from quote to quote could be dry and uninteresting but the Dictionary of Labour Quotations is very far from that.  There are also companion books of Conservative quotes by Iain Dale and Liberal quotes by Duncan Brack (all published by Biteback Publishing).

Only by reading what has been said and written can we hope to understand politics.  The context of words is often critical but also too often history is forgotten.  How is it that we have even got to this position in the first place?

Political debate never ends and there remain fundamental differences in principle between the political parties.  It may suit some to pretend that politicians are all the same but as my book shows, that is not the case.

The big ideological battles may be behind us but we still need to know and understand what they were if we are to campaign effectively.  This is also important in the generation of new ideas.  Reading the quotes of Marx and Engels reminds the left of its past and shared history but also why it has spread in different directions.

Researching the quotes in the book I was reminded that some of the themes, if not the solutions or rhetoric, continue to resonate.  Looking at the speeches of Ed Miliband but tracing back the comments of others, you can see that the Labour Party remains focused on fairness, ensuring that a narrow majority or elite do not dominate or exploit.  There are, of course, a whole different set of arguments about whether the reality meets the rhetoric.

The importance of history to political parties should be clear.  The Labour Party's debate over Clause IV of its constitution, which committed it to public ownership, came to symbolise that.  Tony Blair's proposed change of wording was hugely important, both to the party and the country.  Blair wanted to show that Labour was not stuck in the past. For Blair, placing Labour's principles in a modern context meant that people could have faith in it and, it could be argued, this helped lay the foundations for their election wins.  Indeed, there are some valuable lessons for Ed Miliband in his current dealings with the trade unions.

Importantly, the book also reminds us about the personality and personalities of the left. Politics feels more constrained in the modern era and certainly the media has played a role in that. That wasn't always the case in the past. Some of the insults hurled around in public are enough to make your hair curl and a fair few are included here. The caricature of the left as bureaucratic and humourless is, I hope, dispelled.

Reading the quotes brings the past to life. It can remind you of the political debates, the political positioning, the decisions to be made, the challenges and sometimes even where things went wrong.

This is critical for politicians themselves but also those involved in political and policy debates.

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