YOU SAID:
Not one pulse of his life would ever weaken
INTO JAPANESE
彼の人生の1つのパルスが弱くなることはありません
BACK INTO ENGLISH
One pulse of his life never weakens
INTO JAPANESE
彼の人生の1つのパルスは決して弱まらない
BACK INTO ENGLISH
One pulse of his life never weakens
That didn't even make that much sense in English.