In his book, The Exploits and Triumphs in Europe of Paul
Morphy, Frederick Milne Edge wrote, concerning Morphy and chess literature:
In answer to a gentleman in Paris as to whether he [Morphy] had
not studied many works on chess, I heard him state that no author had been of
much value to him, and that he was astonished at finding various positions and
solutions given as novel - certain moves producing certain results. etc. for he
had made the same deductions himself, as necessary consequences.