This book investigates the internal coherence and systematic structure of Bernard Bolzano's logical thought as presented in the first three parts of his Theory of Science. Ettore Casari, a scholar of logic and philosophy, utilizes the formal framework of predicate calculus with identity and the Hilbert epsilon calculus to reconstruct Bolzano's theories. The work argues that Bolzano's logic possesses a rigorous, unified architecture that warrants a formal re-evaluation beyond traditional discursive analysis.

Experts recognize this work as a specialized contribution to the formal study of Bolzano's philosophy. Readers frequently note the high level of technical density required to follow the author's application of Hilbert's epsilon calculus.