Japanese vocabulary divides, broadly, into two lineages: Sino-Japanese (kango, words imported from China, read with their Chinese-derived pronunciation, typically abstract and scholarly) and native Japanese (wago, words original to Japanese, read with native pronunciation, typically concrete and sensory). Which of the two does the opening of Kusamakura, read in the previous article, lean toward?

An opening built almost entirely from native Japanese

Let’s look again at the opening four clauses of Kusamakura.

Reason offends. Feeling sweeps you away. Willfulness cramps you in. However you look at it, the human world is hard to live in. (working translation)

“Reason,” “feeling,” “willfulness” — the key nouns are Sino-Japanese (or Sino-Japanese-derived elements). But the verbs and adjectives — “offends,” “sweeps you away,” “cramps you in,” “hard to live” — are almost entirely native Japanese. Read aloud, it feels easy on the tongue, plain. This plainness is what supports the readability of the parallel-clause rhythm seen in the previous article.

A sentence packed with Sino-Japanese, just paragraphs later

And yet, only a few paragraphs later in that same Kusamakura, a sentence of an entirely different register appears.

It is enough, having thus perceived one’s own world, to gather the turbid, degenerate vulgar realm cleanly and brightly into the camera of the inch-square altar of the spirit. (working translation)

“The inch-square altar of the spirit,” “turbid, degenerate” — these are extremely archaic Sino-Japanese phrases, largely unfamiliar to today’s reader. “The inch-square altar of the spirit” is a classically-derived phrase pointing to the mind (the spirit); “turbid, degenerate” means a corrupted, morally muddied age or world. This sentence carries its meaning almost entirely through Sino-Japanese density, with barely any help from native vocabulary.

Two extremes within the same essayistic novel

What’s notable is that this native-Japanese-centered sentence and this Sino-Japanese-dense sentence exist only a few paragraphs apart, within the same work, the same chapter. Sōseki draws the reader in with the rhythm of parallel clauses, then leads them into more difficult, more elevated Sino-Japanese prose. That very gap is what produces the distinctive intellectual texture of Kusamakura.

The same tendency in the cat’s vocabulary

The vocabulary of the cat narrator seen in the article on I Am a Cat — “cultivating a spirit of vast composure,” “a sense of admiration,” “haughtily,” “insolent to all around him” — belongs to this same Sino-Japanese-dense lineage. The words the cat uses to narrate trivial happenings are continuous with the vocabulary of Kusamakura’s most elevated passages. Sōseki, it turns out, draws on the same stock of Sino-Japanese vocabulary for both an earnest, essayistic novel and a comic cat’s narration.

A native-Japanese-centered sentence "Reason offends" Plain, easy on the tongue A Sino-Japanese-dense sentence "The camera of the altar of the spirit" Elevated, difficult The same stock of Sino-Japanese vocabulary reappears in the cat's comic narration too Diagram: ToL, comparing vocabulary across Kusamakura and I Am a Cat
A native-Japanese-centered sentence, and a Sino-Japanese-dense one. Diagram: ToL

Worth checking as you read

First, this article has not identified the precise classical source (which specific Chinese text) for phrases like “the altar of the spirit” or “turbid, degenerate.” They are treated here as expressions from the classical Chinese tradition, in circulation among the educated class of the time.

Second, this article has not attempted any quantitative measurement of the balance between Sino-Japanese and native vocabulary (such as a statistical count of character ratios). It remains a qualitative analysis, contrasting two representative sentences.

Summary

PointContent
A native-Japanese-centered sentenceThe parallel clauses opening Kusamakura — plain, easy on the tongue
A Sino-Japanese-dense sentence“The camera of the altar of the spirit” — elevated, difficult
The distance between themBoth exist only a few paragraphs apart, in the same work
Continuity with the cat’s narrationI Am a Cat’s Sino-Japanese vocabulary belongs to the same stock

In short — Sōseki never let go of either vocabulary, plain native Japanese and elevated Sino-Japanese, and moved freely between the two within his works.