Principles of Epistemology

The purpose of this post is to organize various definitions and principles of epistemology. There are 77 posts organized into seven sections: Truth, Knowledge, Language, Representation, Reason, Understanding, Phenomena.

Update: The official Principles of Epistemology (2025) essay can be found at this link.

1. Truth (4)

What is truth?
What is reality?
What is true?
What is ontology?

2. Knowledge (6)

What is knowledge?

What is epistemology?

What is justified?
What is a belief?
Fundamentals of belief
What is a priori, a posteriori, analytic and synthetic knowledge?

3. Language (17)

What is language?
Fundamentals of language
What is a word?
What is a name?
What is a symbol?
What is a concept?
What is a form?
What is a definition?
What is establishment?
What is a meaning?
What is literal?
What is a sentence?
What is grammar?
What is syntax?
What is clear?
What is subjective?
What is objective?

4. Representations (8)

What is a representation?
What is a proposition?
What is a description?
What is an explanation?
What is mathematics?
Fundamentals of mathematics
What is a number?
What is exact?

5. Reason (15)

What is reason?
Fundamentals of reason

Belief analysis

What is evidence?
What is proof?
What is a fact?
What is an axiom?
What is science?
What is an experiment?
What is logic?
What is intuition?
What is memory?
What is statistics?
What is analysis?
What is a conclusion?

6. Understanding (5)

What is understanding?
Quotes and the organization of thoughts
What is a principle?
What is a fundamental?
What is a system?

7. Phenomena (22)

What is a phenomenon?
What is phenomenology?
Fundamentals of phenomenology
What is experience?
What is a perception?
What is a sense?
What is data?
What is information?
What is a pattern?
What is a cause?
What is a thing?
What is something?
What is an entity?
What is an object?
What is an attribute?
What is a detail?
What is an aspect?
What is a characteristic?
What is a property?
What is a trait?
What is a condition?
What is a quality?