About the Author


Barry Kaplan

Barry B. Kaplan is a lifelong student and best-selling author whose career has spanned accounting, operations, and product design. After graduating university, he practiced as a Chartered Accountant (SA) and Operations Director in Johannesburg before joining a U.S. technology firm in New York, where his work expanded to include systems design, product strategy, and organizational leadership.

He has helped build and lead companies in digital commerce, wholesale distribution, and emerging neural-wearable technologies, serving as COO of a leading U.S. watch importer and more recently as EVP and board member of an international neural-wearables startup that he helped navigate to the Nasdaq. He continues to operate and consult in these areas.

Kaplan is a student of philosophy, particularly Jewish philosophy. His work is strongly influenced by decades of teachings of Rabbi Akiva Tatz and Rabbi Dovid Gottlieb, especially in their treatment of reason, evidence, and Jewish metaphysics. His writing reflects a sustained effort to examine classical Jewish ideas using the tools of contemporary inquiry.

He is the author of the best-selling Horology (Schiffer, 2022) and Proof: The Rational Case for God (Emet Publishing, 2025). He lives and works in New Jersey.


Do I Really Exist?

How do you know you exist—and why does anything exist at all? A clear, rational journey from doubt about reality to the case for God.

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