ABSTRACT
Frege’s logic effectively brought to an end the dominance of Aristotelian logic which had been taken for granted in the schools for more than two thousand years. PostAristotelian logic begins only with Frege. By terminating the life span of Aristotle’s system Frege completed a process that had begun centuries earlier with Galileo’s destruction of Aristotelian physics. In the field of logic, it was an epoch-making work.1 As Bochenski put it, the significance of the book is comparable only to that of Aristotle’s Prior Analytic, and Frege himself must be considered the most important thinker in the field of mathematical logic.2
