Complex sentence: Critics have argued that Freud's theory of dreams requires sexual interpretation, but Freud himself refuted this point, noting: "The assertion that all dreams require a sexual interpretation, against which critics rage so incessantly, occurs nowhere in my" Interpretation of Dreams.
Split into simpler sentences: Critics have argued that Freud's theory of dreams requires sexual interpretation. Freud, however, contest this criticism, noting that "the assertion that all dreams require a sexual interpretation, against which critics rage so incessantly, occurs nowhere in my" Interpretation of Dreams.