Reason

Experience

Intuition

Revelation

René Descartes

John Locke

David Hume

Immanuel Kant

Cogito ergo sum

Nihil est in intellectu quod non prius fuerit in sensu

Esse est percipi

I think, therefore I am

Sensation and reflection

Reason and intuition

Perception and conception

Memory and imagination

To provide us with raw data about the world

To interpret and organize sensory data

To store and retrieve memories

To generate ideas and concepts

To interpret and organize sensory data

To store and retrieve memories

To generate ideas and concepts

To make judgments and decisions

Secondary qualities are real properties of objects.

Secondary qualities are subjective qualities that depend on the observer.

Secondary qualities are a combination of real and subjective qualities.

Secondary qualities are not real properties of objects.

Primary qualities are real properties of objects.

Primary qualities are subjective qualities that depend on the observer.

Primary qualities are a combination of real and subjective qualities.

Primary qualities are not real properties of objects.

The bundle theory of perception is the idea that objects are made up of a bundle of qualities.

The bundle theory of perception is the idea that the mind is made up of a bundle of ideas.

The bundle theory of perception is the idea that perception is a process of bundling together different sensory experiences.

The bundle theory of perception is the idea that the world is made up of a bundle of objects.

Personal identity is determined by the continuity of consciousness.

Personal identity is determined by the continuity of the body.

Personal identity is determined by the continuity of memories.

Personal identity is determined by the continuity of character traits.

Free will is the ability to choose between different courses of action.

Free will is the ability to act independently of the laws of nature.

Free will is the ability to control one's own thoughts and actions.

Free will is the ability to resist temptation.

Knowledge is derived from experience.

Knowledge is derived from reason.

Knowledge is derived from intuition.

Knowledge is derived from revelation.

The mind is a blank slate at birth.

The mind is filled with innate ideas.

The mind is a combination of innate ideas and experience.

The mind is a product of the brain.

Ethics is based on reason.

Ethics is based on experience.

Ethics is based on intuition.

Ethics is based on revelation.

Politics is based on reason.

Politics is based on experience.

Politics is based on intuition.

Politics is based on revelation.