LSE Philosophy graduate Hamza King interviewed LSE Philosophy Professor J. McKenzie Alexander about his new book ‘The Open Society as an Enemy’ for his Phlexible Philosophy Podcast.

Karl Popper was one of the most influential philosophers of the twentieth century. Widely considered to be the father of modern science, Popper introduced the principle of falsificationism which states that for a theory to be considered scientific, it must have a hypothesis which is falsifiable, or capable of being disproven. A theory with a hypothesis which cannot be disproven, like the belief that God created the universe in seven days, is not rightly understood to be a scientific theory.

Popper turned his attention to political philosophy during the Second World War, culminating in the publication of The Open Society and Its Enemies in 1945, where Popper offered a defence of liberal values, famously stating that “We should therefore claim, in the name of tolerance, the right not to tolerate the intolerant.”

Jason McKenzie Alexander, who has spent several decades writing on the philosophy of science, has followed in Popper’s footsteps and turned his attention to political philosophy in his latest book, The Open Society as an Enemy: A critique of how free societies turned against themselves (2024). Alexander warns that there has been an inversion of values across Western societies, where many now view the Open Society as a threat, rather than something to be celebrated, and argues that we must revise and reinvigorate our understanding of the Open Society, making it relevant to the problems we face in the twenty-first century.

You can download The Open Society as an Enemy for free here.

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