An article in "Philosophy of Recent Times" has described this book as an "attempt to expound a psychological system of logic within empiricist principles.” This work was important to the history of science, being a strong influence on scientists such as Dirac.

[1][2] A System of Logic also had an impression on Gottlob Frege, who rebuked many of Mill's ideas about the philosophy of mathematics in his work The Foundations of Arithmetic.

[3] Mill revised the original work several times over the course of thirty years in response to critiques and commentary by Whewell, Bain, and others.

He concludes with "Logic, then, is the science of the operations of the understanding which are subservient to the estimation of evidence" This Book is headed "Of Names and Propositions".

"There is no more important intellectual habit, nor any the cultivation of which falls more strictly within the province of the art of logic, than that of discerning rapidly and surely the identity of an assertion when disguised under diversity of language".