Marx and Engels
On British Empiricism
The Eighteenth Century from Condition of the Working Class in England, Engels 1843
Engels to Marx 19 Nov 1844
The Vulgar Element in Smith’s Theory, Marx in Theories of Surplus Value
Preface to Anti-Duhring, 1878
On Dialectics, Engels 1878
See Natural Science and the Spirit World, Engels 1883
See also:
Marx and Engels on Philosophy
Marx and Engels on Natural Science