John Locke
George Berkeley
100

Introduced the concept of “Primary and Secondary Qualities.”

John Locke.
100

Introduced the theory of Immaterialism / Subjective Idealism.

George Berkeley.

200

Qualities that are inherent on the objects (OBJECTIVE).

Primary Qualities.

300

Detected by our senses (SUBJECTIVE).

Secondary Qualities.

400

Belief that ideas are innate, and are derived from reason and logic.

Rationalism

400

Says that God is the real “cause” of the universe (Omnipotent Being). 

Occasionalism

500

Innate ideas doesn’t exist, but knowledge is instead gained through experiences.

Empiricism.

500

Argues for the non-existence of a physical world. Only the mind exists.

George Berkeley.

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