István Hatvani

Life & Legacy

István Hatvani (21 November 1718 – 16 November 1786) was a Hungarian polyhistor, mathematician, natural philosopher and theologian. Born in Rimavská Sobota (then Rimaszombat), he studied at the Debrecen Reformed Theological University before setting off on his scholarly travels to Basel, Utrecht and Leiden, where he acquired doctorates in theology and medicine and studied under luminaries such as Johann Bernoulli and Daniel Bernoulli. Returning to Debrecen in 1749, he was appointed professor of mathematics, philosophy and experimental physics, introducing a rigorous Newtonian, experiment-based approach in place of the predominant Wolffian logic‑deductive method. His expansive teaching repertoire ranged from theology and ontology to mechanics, astronomy and early probability theory, making him the first Hungarian to apply the law of large numbers in mortality statistics and laying foundations for political arithmetic and proto‑economics in Hungary.