Bertrand Russell

A prominent 20th-century British philosopher and logician, renowned for foundational work in analytic philosophy, epistemology, and ethical theory.

theorist

1872 - 1970

Publications

1900	"A Critical Exposition of the Philosophy of Leibniz"
1905	"II.—ON DENOTING"
1908	"Mathematical Logic as Based on the Theory of Types"
1911	"V.—Knowledge by Acquaintance and Knowledge by Description"
1938	"The Principles of Mathematics."

Does an inability to disprove, mean proof?

Can "know" something, if you believe for the wrong reason?