An empiricist believes that

An empiricist holds that genuine knowledge is acquired through our sensory perceptions and experience.

The idea that natural science methods should not apply to social science reflects an anti-naturalist, interpretive stance.

The claim that social science methods cannot enter natural science is unrelated to the empiricist thesis on knowledge.

The view that no knowledge is genuine describes radical scepticism, opposite to empiricism.

Empiricism traces knowledge to observation rather than to innate reason or intuition.

John Locke and David Hume are leading philosophers of the empiricist tradition.