Skip to Main Content

Philosophy 2.0

Comprehensive LibGuide for philosophy, covering world philosophy, branches of philosophy, movements, and concepts.

The term "logic" came from the Greek word logos, which is sometimes translated as "sentence", "discourse", "reason", "rule", and "ratio". Of course, these translations are not enough to help us understand the more specialized meaning of "logic" as it is used today.

So what is logic? Briefly speaking, we might define logic as the study of the principles of correct reasoning. This is a rough definition, because how logic should be properly defined is actually quite a controversial matter.

Another important aspect of the study of philosophy is the arguments or reasons given for people's answers to these questions. To this end philosophers employ logic to study the nature and structure of arguments. Logicians ask such questions as:

  • What constitutes "good" or "bad" reasoning?
  • How do we determine whether a given piece of reasoning is good or bad?

*Plain text From Florida State University's Philosophy Department Website (,, links derived by creator.

Overview of Logic from Stanford Encyclopedia of Philosophy: Logic

Resources on Logic

ProQuest Logic and Philosophy Feed (Current Research)