[E]ven if a person excels in Torah and good deeds more than all his contemporaries, if he has not learned the secrets of Torah and the wisdom of truth, he must reincarnate in the world (...) Now the matter is clarified-the whole part of the revealed Torah is but a preparation to become worthy and merit attaining the concealed part. It is the concealed part that is very wholeness and the purpose for which man is created.