Wikipedia claims that a Jewish yeshiva teaches that Jews have different souls than Gentiles. To support the claim, wikipedia says that one of their teachers quoted Abraham Isaac Kook as following:
The difference between the Jewish soul, in all its independence, inner desires, longings, character and standing, and the soul of all the Gentiles, on all of their levels, is greater and deeper than the difference between the soul of a man and the soul of an animal, for the difference in the latter case is one of quantity, while the difference in the first case is one of essential quality.
The given source is not available anymore. Other examples of the quote like this petition source it to Talmud Unmasked, which is an antisemitic book with fake or out-of-context Talmud quotes.
My main question would be if Kook wrote this, and if the quote represents what Kook believes, or if it is taken out of context. Secondary questions would be if the teacher quoted Kook approvingly, and if the yeshiva actually teaches that Jews and Gentiles have different souls.