Meaning: The quote by Ernest Mandel reflects the enduring relevance and adaptability of Marxist ideology in understanding and addressing class struggles and revolutions. Mandel, a prominent Marxist economist and theorist, emphasizes the dynamic nature of Marxist principles, rejecting the notion that the Marxist program is a "definitely closed book." This assertion encapsulates the belief that Marxism remains a living and evolving framework that draws from the historical experiences of class struggle and real revolutions.

Mandel's reference to the "continuity of the experience of the actual class struggle and real revolutions of the last one hundred and fifty years" underscores the significance of historical context in shaping Marxist thought. Throughout the past century and a half, societies across the globe have witnessed profound socio-economic transformations, often driven by class conflicts and revolutionary movements. From the industrial revolutions of the 19th century to the wave of anti-colonial struggles in the mid-20th century, these historical upheavals have informed and enriched the Marxist program.

Mandel's words also suggest that the core tenets of Marxism, such as the critique of capitalism, the dialectical understanding of history, and the advocacy for proletarian empowerment, retain their relevance despite the passage of time. Rather than being confined to a fixed set of ideas, Marxism is portrayed as a dynamic and adaptable framework that continues to resonate with contemporary social and political realities.

Furthermore, the quote implies that the principles of Marxism are not dogmatic or rigid, but rather capable of incorporating new insights and experiences gleaned from ongoing class struggles and revolutionary movements. Mandel's perspective aligns with the notion that Marxist theory should not be static, but rather open to reinterpretation and adaptation in response to evolving social conditions.

In a broader context, Mandel's quote reflects the enduring debate within leftist circles regarding the relevance and applicability of Marxist ideology in the contemporary world. While some may argue that Marxism is a relic of the past, Mandel's assertion challenges this view by asserting that the Marxist program remains pertinent and open to development.

In conclusion, Ernest Mandel's quote serves as a reminder of the living nature of Marxist thought, rooted in the historical experiences of class struggle and revolutions. It underscores the ongoing relevance and adaptability of Marxist principles, rejecting the notion that Marxism is a closed and obsolete doctrine. Instead, Mandel's perspective invites a dynamic and open-ended understanding of Marxism, capable of engaging with the complexities of modern society and the evolving dynamics of class conflict and revolutionary change.