when you have successfully grasped the dream-censorship and symbolic representation, you will not, it is true, have mastered dream-distortion in its entirety, but you will nevertheless be in a position to understand most dreams
Freud establishes symbolic representation as one of the two essential mechanisms—alongside dream-censorship—required to decode dream-distortion, giving it structural centrality in psychoanalytic dream theory.
, Introductory Lectures on Psycho-Analysis, 1917thesis