Learn to Distinguish Banality

Learn to distinguish banality. Remember that mediocrity thrives on “ideas.” Beware of the modish message. Ask yourself if the symbol you have detected is not your own footprint. Ignore allegories. By all means place the “how” above the “what” but do not let it be confused with the “so what.” Rely on the sudden erection of your small dorsal hairs. Do not drag in Freud at this point. All the rest depends on personal talent.

Nabokov responding in an interview in Strong Opinions.