OPINION: David Grant is one of those dogged miners of the past whose unceasing efforts are occasionally rewarded with a historical gem.
Last Saturday, at a Fabian Society seminar entitled The Kirk Legacy, he shared one of them with the world.
Asked to present a paper on the early life of the Labour Party leader and prime minister, Norman Kirk (whose government was elected 40 years ago this month), Mr Grant read aloud a short passage Kirk had written for an unfinished autobiography.
The 150-strong Auckland audience was astonished. Not simply because Kirk's stark prose bears comparison with Hemingway and Steinbeck, but also for the glimpse his words offered into the mind of a working-class New Zealander recalling life in the Christchurch suburb of Linwood during the lean years of the 1930s.
In Kirk's description of the short street where he lived, one hears not just compassion but also a barely suppressed anger at its inhabitants' truncated lives. Obvious, too, is Kirk's desperation to escape the limiting effects of its material and spiritual poverty.
For Kirk was a highly intelligent man with a rare hunger for knowledge of every kind. In later life he would refer to his favourite books as "my patient friends".
That drab Linwood street, which had swallowed the lives of so many of his neighbours, would not claim him. But, equally, Linwood would never relinquish its hold over his imagination. It's no exaggeration to say his life was dedicated to breaking Labour's people out of such working-class prisons.
Perhaps this is what working-class New Zealanders sensed and loved about the man. That here before them was an emancipator; someone who had seen the size and richness of the world from which they were excluded. A political leader determined to win them entry.
So many of the contemporary Left romanticise poverty, imbuing it with mysterious moral power. Kirk despised such nonsense.
In the brief passage Mr Grant read out (sorry, but you'll have to wait for his book), this son of the Great Depression makes it very clear that there is nothing noble or pure about the experience of poverty - quite the opposite, in fact. Poverty deadens.
It lowers horizons and empties its victims' lives of hope. Poverty is the thief of dreams; the robber of dignity; an affront to the conscience.
For Kirk, to be poor was to be trapped and shackled: forced to live on a dead-end street.
Another contributor to the Kirk Legacy seminar was the political journalist, Colin James. Describing Kirk as "a political pivot between two eras", he painted him as the harbinger of the big changes that would follow the election of the fourth Labour government in 1984.
It is certainly possible to see in Kirk's dispatch of the frigate HMNZS Otago to observe the French atmospheric nuclear tests at Mururoa, and in his cancellation of the 1973 Springbok tour, clear anticipation of the defining moments of the 1980s.
But it is wrong, I believe, to mould his features into some sort of crude Janus mask: one half smiling benignly on what Mr James calls "the apogee of social democracy" in the early 1970s; the other staring with prophetic intensity towards the brave new world of open minds - and markets - just beyond the decade's horizon.
As Margaret Hayward, Kirk's private secretary (and another contributor to the day-long seminar) revealed in her invaluable book Diary of the Kirk Years, "Mr K" feared laissez-faire capitalism more than any other ideology.
In his last speech to the Labour Party conference, writes Hayward, he warned delegates against too much social liberalism.
The permissive society, he said, was "just another way of saying: 'I can do what I like'."
That would include not just the right to use marijuana but the right to exploit, to speculate, to put monetary gain above social duty.
Some customs and laws might well have become irrelevant through the passage of time, but the permissive society, carried to its logical end, meant there was no law.
"And if there is no law, the freedom of the permissive society is a trap and a prison for the weak in society."
Those Linwood memories never left him.
The great irony of the past 40 years, of course, is that as our personal lives have become increasingly unconfined, our political options have narrowed dramatically.
Attendees at Saturday's seminar rose as one to welcome Sir Owen Woodhouse - principal architect of New Zealand's world-beating system of accident compensation. But what chance would such a socially progressive scheme have in 2012? Who, today, would dare promote Kirk's "Ohu" - communes on Crown land!
Norman Kirk was a pivot, yes, but the turn that followed his tragic death in 1974 was from expansiveness towards constriction; from equality towards inequality; from the light towards the darkness. Down a dead-end street.
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