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" "Logic aims to instruct the human mind as to its own nature and processes; it will lay bare the interior working of our mind for our guidance. The object of the study of logic is thought, its nature, and its proper classification.
Joseph Dietzgen (December 9, 1828 – April 15, 1888) was a German socialist philosopher, Marxist and journalist. Entirely self-educated, he developed the notion of dialectical materialism independently from Marx and Engels. His publications had major influences on Vladimir Lenin and the Russian Revolution of 1917.
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Much of what I have to say for my case may sound wonderful, because it runs counter to the popular prejudice, but the only witness required to prove the truth of my statements is the clear brain of my pupil, who has only to examine his own experience without preconceived notions, in order to find proofs on every hand.