Renewing the Old, Sanctifying the New

Rav Kook’s Vision: Halakhah, Secular Knowledge, and the Renewal of Judaism.

Those of us who know something about Rabbi Abraham Isaac HaKohen Kook’s life and philosophy know about his being stuck outside of the Land of Israel during WWI, being the first Ashkenazi Chief Rabbi of British Mandatory Palestine, and his encouragement of the secular Zionists who turned swamps into vegetation. But not many of us have analyzed the personal notebooks that the Rav left, commonly known as Shemonah Kevatzim (eight collections).

Recently, I had the privilege of sitting down with Professor Marc B. Shapiro author of the acclaimed new book, Renewing the Old, Sanctifying the New: The Unique Vision of Rav Kook (Littman Library, 2025). Our conversation ranged from the philosophical underpinnings of Rav Kook’s thought to its relevance for modern Orthodoxy and contemporary Jewish life. Using the notebooks and other information Marc B. Shapiro’s Renewing the Old, Sanctifying the New offers a window into the philosophical heart of Rav Kook’s approach to halakhah and secular knowledge, using Rav Kook’s own words to illuminate his radical, yet deeply rooted, vision for modern Judaism.

I found it important to use those words and quotes when discussing the topic with Professor Shapiro. Rav Kook’s words speak volumes – and you’ll hear them throughout the interview, and of course we’ll add some here.

“What is going on now in the world? Since there is no one, and in particular no Talmudic scholar who wants to see what is taking place at present in the world, is that a reason why I should also not see? No! I am not enslaved to the masses. I walk in my own way, in the righteous path, and look straight ahead.” (p. 6)

This refusal to be “enslaved to the masses” sets the stage for a Judaism that is not afraid to engage with new realities, even as it remains anchored in tradition.

One striking theme in Shapiro’s book is the shift within Orthodoxy from a “fear of sin” to a “fear of thought.” Rav Kook warned that excessive focus on legal minutiae can diminish spiritual stature. Shapiro elaborated that, in Kook’s view, true religious greatness comes from connecting to the “great and exalted matters” of the soul, not just trembling before halakhic details

“When the great person brings himself too fully into the measure of [halakhic] details, whether in learning them or trembling before them, he shrinks and his stature is diminished. [Then] he must do teshuvah out of love, from the greatness of the souls, in order to connect the content of the life of his soul to great and exalted matters.”

This perspective underpins his rejection of increasing stringency and his advocacy for a Judaism where the law serves as a vehicle for spiritual greatness, not as an end in itself.

Rav Kook’s philosophy embraces the Torah as a living guide rather than a static, literal document. He is placed firmly within Orthodoxy, yet he resists the notion that faithfulness requires rigid literalism or ever-tightening stringency. Instead, he champions a dynamic engagement with tradition, one that is open to reevaluation and renewal as circumstances change.

A particularly provocative idea in Kook’s thought, highlighted by Shapiro, is the “valorization of the masses.” Kook argued that the unlearned often preserve a purer form of natural morality than scholars, whose intellect can be clouded by over-analysis. This challenges the elitism sometimes found in religious circles and calls for a renewed respect for intuitive ethics. Professor Shapiro connected this intuitive ethics with taking responsibility, for example – not allowing one segment of the population to serve in the army while another refuses.

“The natural people who are not learned have many advantages over the learned ones, as their natural intellect and inherent morality have not been corrupted by the mistakes that arise from [Talmudic] learning, and through the weakening of strength and anger that comes together with the yoke of [Talmudic] learning...” (p. 92)

Perhaps most radical in today’s society is Rav Kook’s insistence that engaging with all forms of wisdom is a religious imperative.

“Anyone who is able to involve himself in all the wisdoms of the world, and does not do so because of a weakness in his soul, diminishes the ‘image’ [of God within himself], as it says, ‘for in the image of God made He man’.” (p. 161)

Conclusion

Through these teachings, as presented by Marc B. Shapiro, Rav Kook’s vision emerges as one of profound integration: halakhah and secular wisdom, tradition and renewal, spirituality and intellectual openness. His legacy is a call to “walk in [one’s] own way, in the righteous path, and look straight ahead,” forging a Judaism that is both rooted and ever-renewing. Renewing the Old, Sanctifying the New is more than a study of Rav Kook-it’s an invitation to engage deeply with the questions that define Jewish life in every generation.