There are no vacant lots in nature.

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Growth for the sake of growth is the ideology of the cancer cell.

Let a sufficient number of men whose intellectual respectability is vouched for by their academic position pay sufficient lip-service to the ideals of scientific method, and they will be allowed to teach by example whatever kind of anti-science they like, even if this involves a hardly disguised breach with all the accepted canons of scientific method.

Wilderness is not a luxury but a necessity of the human spirit.

And suppose that now within this same civilisation a movement grew up hostile to these fundamental principles…an epidemic disease: a kind of epidemic withering of belief in the importance of truth and in the obligation to think and act in a systematic and methodical way. Such an irrationalist epidemic infecting religion would turn it from a worship of truth to a worship of emotion and a cultivation of certain emotional states…Infecting politics it would substitute for the ideal of orderly thinking in that field the ideal of tangled, immediate, emotional thinking; for the idea of a political thinker as a political leader the idea of a leader focussing and personifying the mass emotions of his community. This movement of thought would need to proceed by stealth because the healthy tissues of thought would strongly resist any open attack on the springs of rationality and scientific thinking.

Religion would be predominantly a worship of truth…Philosophy would be predominantly an exposition not merely of the nature of thought, action & etc. but of scientific thought and orderly (principled, thought-out) action, with special attention to method and to the problem of establishing standards by which on reflection truth can be distinguished from falsehood. Politics would be predominantly the attempt to build up a common life by the methods of reason (free discussion, public criticism). Education would be predominantly a method for inducing habits of orderly and systematic thinking. And so on.

Nature is what wins in the end.

Despite this negative conclusion regarding one of Hacohen’s aims I do not want to leave the reader with an unfavourable impression of the book. It is a work of quite remarkable scholarship, well organised, clearly and vigorously written. It will provoke debate among friends of Popper’s ideas, and perhaps among others who are less friendly. It should lead to a reconsideration of Popper’s low standing in contemporary philosophy. It stands as a monument to Popper’s indomitable spirit and to the support of many people, not all of them adequately recognised by Popper himself, who helped him on his way. These include some members of the Vienna Circle, Karl Buhler, Robert Lammer (the diligent first reader of Logik Der Forschung), Ernst Gombrich and Colin Simkin. May they never be forgotten.

Chaos was the law of nature; Order was the dream of man.

Hacohen’s statement above seems to assume that decreasing the extent of Big Government and the “nanny state” does not count as reform. Such is the gulf that has opened up between socialism and common sense. Hacohen hopes that the left can be reinvigorated by Popper’s ideas, properly understood, to regain their sense of mission, to recover from the setbacks of the Thatcher and Reagan years, take the offensive and move forward again. I have a similar hope, that the left can move forward, but in a very different direction, the direction of classical liberalism, the direction pointed by Mises and Hayek, and by Popper in his stance as a minimal state liberal.

Nature is thought immersed in matter. . .

Hacohen cited a reference to a 1982 interview where Popper expressed some sympathy with anarchism…”It was, he said, an unrealisable ideal but the closest we can get to it, the better off freedom is”.

Wild roses are fairest, and nature a better gardener than art. .

In the postwar years, Popper no longer demonstrated commitment to reform…He never disavowed piecemeal engineering, but he argued that its purpose was to decrease, not increase, state power. He also showed growing sympathy towards libertarianism, and did little to stop the conservative onslaught of the 1980s.