Why would an American girl-child, born into a good, Irish-Catholic family in the thick of the McCarthy era – a girl who, when she came of age, entered a convent – morph into an atheist, feminist, and Marxist? The answer is in Helena Sheehan’s fascinating account of her journey from her 1940s and 1950s beginnings, into the turbulent 1960s, when the Vietnam War, black power, and women’s liberation rocked her bedrock assumptions and prompted a volley of life-upending questions – questions shared by millions of young people of her generation. But, for Helena Sheehan, the increasingly radicalized answers deepened through the following decades. Beginning by overturning such certainties as America-is-the-world’s-greatest-country and the-Church-is-infallible, Sheehan went on to embrace existentialism, philosophical pragmatism, the new left, and eventually Marxism. Migrating from the United States to Ireland, she became involved with Irish republicanism and international communism in the 1970s and 1980s. Sheehan’s narrative vividly captures the global sweep and contradictions of second-wave feminism, anti-war activism, national liberation movements, and international communism in Eastern and Western Europe – as well as the quieter intellectual ferment of individuals living through these times. Navigating the Zeitgeist is an eloquently articulated voyage from faith to enlightenment to historical materialism that informs as well as entertains. This is the story of a well-lived political and philosophical life, told by a woman who continues to interrogate her times.

Utterly corrupt corporate and government elites bankrupted Greece twice over. First, by profligate deficit spending benefitting only themselves; second, by agreeing to an IMF "bailout" of the Greek economy, devastating ordinary Greek citizens who were already enduring government-induced poverty, unemployment, and hunger. Finally, in response to dire "austerity" measures, the people of Greece stood up, forming, from their own historic roots of resistance, Syriza-the Coalition of the Radical Left. For those who caught the Syriza wave, there was, writes Helena Sheehan, a minute of "precarious hope."A seasoned activist and participant-observer, Helena Sheehan adroitly places us at the center of the whirlwind beginnings of Syriza, its jubilant victory at the polls, and finally at Syriza's surrender to the very austerity measures it once vowed to annihilate. Along the way, she takes time to meet many Greeks in tavernas, on the street, and in government offices, engage in debates, and compare Greece to her own economically blighted country, Ireland. Beginning as a strong Syriza supporter, Sheehan sees Syriza transformed from a horizon of hope to a vortex of despair. But out of the dust of defeat, she draws questions radiating optimism. Just how did what was possibly the most intelligent, effective instrument of the Greek left self-destruct? And what are the consequences for the Greek people, for the international left, for all of us driven to work for a better world? The Syriza Wave is a page-turning blend of political reportage, personal reflection, and astute analysis.

Why would an American girl-child, born into a good, Irish-Catholic family in the thick of the McCarthy era – a girl who, when she came of age, entered a convent – morph into an atheist, feminist, and Marxist? The answer is in Helena Sheehan’s fascinating account of her journey from her 1940s and 1950s beginnings, into the turbulent 1960s, when the Vietnam War, black power, and women’s liberation rocked her bedrock assumptions and prompted a volley of life-upending questions – questions shared by millions of young people of her generation. But, for Helena Sheehan, the increasingly radicalized answers deepened through the following decades. Beginning by overturning such certainties as America-is-the-world’s-greatest-country and the-Church-is-infallible, Sheehan went on to embrace existentialism, philosophical pragmatism, the new left, and eventually Marxism. Migrating from the United States to Ireland, she became involved with Irish republicanism and international communism in the 1970s and 1980s. Sheehan’s narrative vividly captures the global sweep and contradictions of second-wave feminism, anti-war activism, national liberation movements, and international communism in Eastern and Western Europe – as well as the quieter intellectual ferment of individuals living through these times. Navigating the Zeitgeist is an eloquently articulated voyage from faith to enlightenment to historical materialism that informs as well as entertains. This is the story of a well-lived political and philosophical life, told by a woman who continues to interrogate her times.

Skillfully deploying a large cast of characters, Sheehan retraces the development of Marxist philosophy of science through detailed and highly readable accounts of the debates that have characterized it. Approaching Marxism from the perspective of the philosophy of science, Sheehan shows how Marx's and Engel's ideas on the development and structure of natural science had a crucial impact on the work of early twentieth-century natural philosophers, historians of science, and natural scientists. From the ideas of Marx and Engels, those of the Marxist theoreticians of the Second International to the debates within Russian Marxism up to World War II, Sheehan masterfully surveys the history of marxist philosophy of science, concluding with a close analysis of the development of the debate among non-Soviet Marxists, placing particular emphasis on the contributions of leading British Marxists in the 1930s.