The first modern and rigorous textbooks of logic and set theory written in Spanish were published by Jesús Mosterín. Born in Bilbao in 1941, he spent his career bridging the gap between empirical science and analytical philosophy. His professional life spanned roles as a mathematician, anthropologist, and philosopher, leaving a significant imprint on the academic institutions of Spain and Latin America.
Academic Trajectory and Logic
Mosterín received his initial logical training at the Institut für mathematische Logik und Grundlagenforschung in Münster, Germany. His early research focused on axiomatic set theory, computability, and complexity. In 1983, he became a professor at the University of Barcelona, where he established a department dedicated to logic, philosophy, and the history of science. By 1996, he served as a research professor at the Spanish National Research Council. Beyond his teaching, he curated the inaugural edition of the complete works of Kurt Gödel and translated formal analysis into biographical insights regarding figures such as Alan Turing, Bertrand Russell, and Gottlob Frege.
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His work centered on the reliability of scientific claims and the demarcation between tested hypotheses and speculative theory. Mosterín introduced a distinction between a standard core of relatively supported scientific ideas and a surrounding cloud of unverified speculation. He analyzed epistemic notions such as detection, which requires technological mediation, versus observation, which involves direct sensory awareness. Collaborating with Roberto Torretti, he authored an extensive encyclopedic dictionary of logic and philosophy of science to clarify these conceptual frameworks.
Biological Ontology and Animal Studies
Mosterín engaged with evolutionary theory by examining the definition of life and the nature of biological species. He argued that current biological definitions, based on metabolism or thermodynamics, remain incomplete. He characterized biology as a parochial science limited to Earth, advocating for a broader conceptual framework regarding the ontology of species as neither simple classes nor individuals. This inquiry culminated in a theory of animality, which positioned animals as paradigmatic individuals and established a foundation for viewing anthropology as a science of human primates.
Cosmology and Scientific Rationalism
The scientific image of the universe remained central to his rational worldview. He applied critical analysis to cosmological theories, specifically reviewing the paradigm of cosmic inflation alongside international peers. He concluded that models of inflation lacked sufficient grounds to be included in the standard core of scientific cosmology. Furthermore, his work addressed the misuse of the anthropic principle and the limits of mathematical modeling when applied to the complex structures of the real world.
Fast facts
- Born: 1941, Bilbao, Spain
- Died: 4 October 2017, Barcelona, Spain
- Occupations: Mathematician, anthropologist, philosopher
- Religion: Atheism
- Member of: Academia Europaea
- Cause of death: Pleural mesothelioma
Questions readers ask
What was the main focus of his philosophy of science?
He focused on distinguishing between the reliable, empirically supported core of scientific disciplines and speculative hypotheses.
How did he approach the concept of life in his research?
He found traditional definitions of life based on metabolism or reproduction inadequate, treating biology as a science specific to life on Earth.
Achievements
- Held posts at University of Barcelona and Spanish National Research Council
- Fields: philosophy
