PROLOGUE 
Tms essay is an attempt to clear the ground for a better and 
fuller appreciation of that which gives Marxism its living 
unity-namely, the Dialectical Materialist Method. Its 
special feature is that it seeks to show what this method is 
by means of an examination of what it did in the hands of 
Marx and Engels. It considers the Dialectical Materialist 
Method in action in the theoretical practice of these its first 
elaborators, and following them (so far as falls within its 
purpose) that of their disciples, Lenin and Stalin. 
No pretence is made that this essay is in any way final or 
authoritative. Very much to the contrary : it is in every 
respect an essay, a venture-an attempt at a provisional 
exploration of a field which no British Marxist has hitherto 
attempted on anything but a most perfunctory scale. It is 
therefore liable to all the faults and mischances necessarily 
attending such provisional essays. None the less it is-an 
attempt ! If its demerits-whatever they may be-provoke 
others better qualified to cover the ground in a more worthy 
manner it will have more than served its purpose.