Complex sentence: To account for McDiarmid's style, "J. Ss." said that McDiarmid's native language was Scottish Gaelic, and in translating his writings into English, he used a dictionary extensively, choosing the most impressive word without regard to what part of speech it was.
Split into simpler sentences: To account for McDiarmid's style, "J. Ss." said that McDiarmid's native language was Scottish Gaelic. In translating his writings into English, he used a dictionary extensively, choosing the most impressive word without regard to what part of speech it was.