Rationalism

• Ability to use reason
• Innate ideas

Empiricism

Tabula Rasa

Denial of Innate Ideas

Use of Ockham's Razor

Sense Data

John Locke

Simple versus Complex

Primary versus Secondary

Substance?

George Berkeley

Everything is Secondary

Idealism

Esse est Percipi

Language

God
Sense Data
Self

David Hume

Two

Analytic Propositions

• Negation leads to Self contradiction
• a priori
• true by definition
• necessarily true
• tautologies

Synthetic propositions

• matters of fact
• Source is sense data

Nonsense

God?

Self?

Cause & Effect?

Only sense Data

skepticism

What now?