In the critic's vocabulary, the word "precursor" is indispensable, but it should be cleansed of all connotations of polemic or rivalry. The fact is that every writer creates his own precursors. His work modifies our conception of the past, as it will modify the future.
Variants
The fact is that all writers create their precursors. Their work modifies our conception of the past, just as it is bound to modify the future.