Sentence:  But if he lives badly, he will, in the next life, be a woman; if he (or she) persists in evil-doing, he (or she) will become a <WSD>brute</WSD>, and go on through transmigrations until at last reason conquers. 
Meaning of the word marked with <WSD> tags:  An animal seen as being without human reason; a senseless beast. (from 17th c.)