I find it difficult to understand the above statement. My interpretation of it is that people can affirm their personalities when liberating themselves from their prejudices over doctrines and moralities they do not understand. If this interpretation of the statement is correct, to some degree, I would not necessarily agree to it. I think people affirm their personalities whatever their beliefs are. Taking a couple of opposing examples, I think that both Donald Trump and the Dalai Lama affirm their personalities rather assertively. One, in a very egocentric way, openly expressing his prejudices, while the other one, in a very ego-less way, highlighting the relativeness of everything in life. Personally, I adhere to the morality of the value of liberating oneself of prejudices. In my own life experience, when trying to implement this liberation in my life, I have felt greater doubts not only on my constituent beliefs, but, to a lesser degree, on my current beliefs. I believe that this process has initially led me to a milder expression of my personality, which now, as I grow in maturity, is shifting to greater levels of affirmation and assertiveness.