How do I interpret and relate the elements in bold in the following sentence?


I am having difficulty parsing the sentence below and understanding its
meaning. Is the narrator saying that he doesn’t understand “practical pain”
like hunger, or the more extreme pains like his own 10 examples? Or both?

I am also confused about what phrases go together. I think that: 最も強い痛苦 ＝
「自分の例の十個の禍いなどの痛苦、吹っ飛んでしまう程の痛苦、地獄なのかもしれない痛苦」(全て) ＝ それは（わからない）  
Is this correct?

I also don’t understand what それこそ is doing in this sentence. Is it equating
the [プラクテカルな苦しみ] with the ones above? I.e. that the [プラクテカルな苦しみ] are precisely
[それこそ] the strongest pains?

>
> 「つまり、わからないのです。隣人の苦しみの性質、程度が、まるで見当つかないのです。プラクテカルな苦しみ、ただ、めしを食えたらそれで解決できる苦しみ、しかし、
> **それこそ** 最も強い痛苦で、自分の例の十個の禍いなど、 **吹っ飛んでしまうほどの** 、 **凄惨な阿鼻地獄なのかもしれない** 、
> **それは**
> 、わからない、(しかし、それにしては、よく自殺もせず、発狂もせず、政党を論じ、絶望せず、屈せず生活のたたかいを続けて行ける、苦しくないんじゃないか)？」（人間失格、第一の手記）

**EDIT: made “equation” above clearer**




The part means

> プラクテカルな苦しみ ＝ただ、めしを食えたらそれで解決できる苦しみ ＝それ **＝?** 最も強い痛苦で ＝
> 自分の例の十個の禍いなど、吹っ飛んでしまうほどの、凄惨な阿鼻地獄

The ? is indicated by なのかもしれない,

しかし、それこそ means _but, precisely that (=hunger) is...._ An implicit feeling of
the author/protagonist is that hunger is less significant (or lower or mean)
as suffering than his own (spiritual?) one because hunger is simply a matter
of food.

The following それは、わからない means literally _That, I don't know_. _That_ refers to
the whole equation, i.e., it expresses he does not know whether the "practical
pain" (= hunger) is something greater than his own suffering.




The part means

> プラクテカルな苦しみ ＝ただ、めしを食えたらそれで解決できる苦しみ ＝それ **＝?** 最も強い痛苦で ＝
> 自分の例の十個の禍いなど、吹っ飛んでしまうほどの、凄惨な阿鼻地獄

The ? is indicated by なのかもしれない,

しかし、それこそ means _but, precisely that (=hunger) is...._ An implicit feeling of
the author/protagonist is that hunger is less significant (or lower or mean)
as suffering than his own (spiritual?) one because hunger is simply a matter
of food.

The following それは、わからない means literally _That, I don't know_. _That_ refers to
the whole equation, i.e., it expresses he does not know whether the "practical
pain" (= hunger) is something greater than his own suffering.

