  It is said that Einstein's conceptual base for the theory of relativity was
the philosophy formulated by Immanuel Kant. Then, is it possible to see how
Kant played a role in Einstein's thinking without reading Kant's books? This
question arises because it is not possible for physicists to read Kant's
writings. Yes, it is possible if we use the method of physics. It is known also
that Kant's mode of thinking was profoundly affected by the geography of
Koenigsberg where he spent eighty years of entire life. We examine what aspect
of this geography led Kant to create his philosophy upon which Einstein's
concept of relativity was based. It is pointed out that the Eastern philosophy
of Taoism is a product of the geographical environment similar to that of
Kant's Koenigsberg, and therefore that Kantianism is strikingly similar to
Taoism.
