YOU SAID:
He was a walker, so he invented the telephone so he was a genius
INTO JAPANESE
彼は自分が天才であると思っていた。
BACK INTO ENGLISH
He thought that he was a genius.
INTO JAPANESE
彼は自分が天才であると思っていた。
BACK INTO ENGLISH
He thought that he was a genius.
That didn't even make that much sense in English.