Simplify the following text for a Grade 8 native English-speaking person.
Original: He wrote a whole tractate about the Jews that could be summarized in a few sentences : `` Jews ... are the breed , except a few , without any morality and without any homeland , the breed of which every unit strives to its personal gain , or to its relatives ' gain .
Simplified: He wrote a whole tractate about the Jews that could be summarized in a few sencences : `` Jews ... are the breed , except a few , without any morality and without any homeland , the breed of which every unit strives to its personal gain , or to its relatives ' gain .