Ghazali on the Role of Logic

In Al-Mustasfa, Ghazali's magnum opus in Legal Methodology, he writes:

Introduction

Clarifying that the Domain of Theoretical Disciplines is Limited to Definitions and Proofs

We mention in this introduction those things that can be grasped logically and that they are limited to definitions and proofs. We also mention the necessary conditions for a proper definition and a proper proof and their categories in a more concise manner than we have in Mahakk Al-Nadhar and Mi`yar Al-`Ilm. This introduction is not a part of Legal Methodology or from the prerequisite disciplines specific to it. Rather, it is an introduction to all disciplines: whoever does not master it cannot be depended upon in his fields of study whatsoever. So whoever does not wish to transcribe this introduction should begin from the first chapter, that being the start of Legal Methodology proper. All theoretical disciplines require this introduction as much as Legal Methodology does.