Ancient Logic
The Beginnings
Logic as a discipline starts with the transition from the customary use of certain logical methods and argument patterns to the reflection on and inquiry into these and their elements, including the syntax and semantics of sentences. In antiquity, logic as a systematic discipline begins with Aristotle. However, discussions of some elements of logic and a focus on methods of inference can be traced back to the late fifth century BCE.
Syntax and Semantics
Some of the Sophists classified types of sentences (logoi) according to their force. So Protagoras (485–415), who included wish, question, answer, and command (Diels-Kranz.....
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