Epistemology is concerned with logic, belief, perception, language, science, and knowledge.
Epistemology is, thanks to post-structuralism, broken down into a single concern with ontology.
Epistemology is dependent upon a picture of the mind trying to faithfully represent (or mirror) a mind-independent, external reality. It is a wrong-headed search for the foundations of knowledge.
Epistemology is the proposing, advocating, or refuting of theories about knowledge, belief, opinion, objectivity, detachment, argument, reason, rationality, evidence, facts, and truth.
Epistemology is defined against traditional epistemology with its subject/object relation, along with heidegger who makes the ontological observation that our transparent everyday way of coping with the available can be carried on independently of the emergence of a thematically conscious subject.
Epistemology is a theory of rational thinking or of mathematical rationality which is not separable from the theory of being (ontology) since the structure of rationality and of being are the same (rationality).
Epistemology is ethics in that, if man has learned to see and know what really is, he will act in accordance with truth.
Epistemology is only science self-applied. It is secondary to science and its task is to discover how we know what we know from science.