Likutei Moharan 21:10/ליקוטי מוהר"ן כ״א:י׳

110. And this is the explanation of the fourth chapter of Sifra De’Tzniuta: “Atika is hidden and concealed; Z’ er Anpin is revealed and not revealed.”

2Atika — This is the concept of the transcendent intellects. They are hidden and concealed from every side, for the entire duration of this world. They will only be revealed in the future world.

3But in Z’er Anpin, in the human disciplines—those which man is capable of comprehending—there are also [the aspects of] immanent and transcendent. And every individual, commensurate with his level, has [the aspects of] immanent and transcendent.

4Now, those paradoxes which are impossible for the human mind to comprehend correspond to the aspect of Atika, whereas all the disciplines which the human mind can comprehend correspond to the aspect of Z’er Anpin. Though occasionally, they are concealed, in the aspect of pregnancy. This is:

5not revealed — However, when it is revealed to him, then <it> is in the category of revealed. And all the while that this thing remained “not revealed”/concealed from him, it was like a segulah for him, as above. It is beyond his comprehension. But afterwards, when it is revealed to him, he should share his good with others, as mentioned earlier.