Robert Malthus is famous for making mistakes. He is reputed for claiming that the world could not possibly sustain a population of more than a billion, and that drastic action should therefore be taken to reduce population growth. Few thinkers of the Enlightenment period have attracted more opprobrium. And yet his legacy most certainly lives with us.
He lived in a period when the subject discipline we know as economics was in its infancy. Indeed he, along with Adam Smith, can be considered one of its founding fathers. But the thing about founding a discipline is that much of what you say will be exposed as mistaken by your successors (by analogy: Aristotle and Physics), but that does not diminish the extent of your achievement in laying the foundation. The extent of imagination required is far beyond the capabilities of most. Malthus is perhaps most to be thanked for deploying his mathematical education in it, both statistics and calculus. Though some of this application was awry, and it would take the appearance of computers to actually make some sense of the figures, the idea was there because of him.
The idea he is most associated with is that the 'hare' of population growth must regularly outstrip the 'tortoise' of food production, leading to a great deal of misery and vice. One hears the same ideas echoed by modern-day environmentalists today, although they seldom couch in the moralistic terms of the eighteenth-century clergyman. As it happens, his predictions were wildly mistaken. One feels the need to point this out to his latter-day disciples: in all likelihood, the present enormous population growth in the developing world will flatten out as they grow into more comfortable and middle class lives, while technology advances to the stage where the planet is able to cope with a stabilised population. That may seem rather optimistic, but no-one can really tell.
Donald Winch's fine introduction is to the life, work and thought of the man himself, with only a short conclusion about his legacy and relevance to the world of today. Malthus is sometimes portrayed as a pessimist and regressive in a world of forward-thinking Enlightenment optimists, but Professor Winch shows that this is quite the opposite of the truth. He frames Malthus' thought in terms of the his Whiggish tendencies in the politics of his era and the liberal Anglican world in which he lived. It is often quite difficult going, so the reader is recommended to have her wits about her, but that is certainly not the author's fault; it would be idle indeed to expect tricky subject matter to be simple to understand. Indeed, modern-day readers with no experience of old books often naively assume that all older ideas are simpler than modern ones, as if people were less intelligent once, but Malthus is ample demonstration of the fallaciousness of this assumption. Approach with caution.