"Among the Jews the proportion of insane has been observed to be very large . . . they are four to six times more liable to mental disease than are non-Jews.”

https://www.jewishencyclopedia.com/articles/8123-insanity

"The Jews are more subject to diseases of the nervous system than the other races and peoples among which they dwell. Hysteria and neurasthenia appear to be most frequent. Some physicians of large experience among Jews have even gone so far as to state that most of them are neurasthenic and hysterical."

https://jewishencyclopedia.com/articles/11446-nervous-diseases

"Israeli and American scientists have discovered a gene among Ashkenazi Jews that increases their chances by 40%, of developing the mental disorder schizophrenia, as well schizoaffective disorder and manic depression."

https://www.haaretz.com/.premium-ashkenazi-gene-increases-schizophrenia-1.5294333

‘Because jews are better at finding ways of rationalising away their bias and hypocrisy, they may well not believe that they are being “unfair” at all. In this sense, it can be said that intelligent yet paranoid people do not “know themselves”—meaning that they live in a fantasy world in which there is nothing wrong with them; only with others.

This personality type will see the world as packed full of hostile persecutors who want to destroy them, meaning that an obviously Mostly Peaceful protest at the Capitol becomes an “insurrection” in which people could have been killed.

This personality type will also engage in “paranoid projection,” whereby they purport to find an aspect of themselves aspect they dislike in others, causing them to despise these people. “I hate them” becomes “They hate me,” based on finding some minor evidence of this. Hence the Leftist obsession with how “hateful” their opponents are.’

[8 Key Traits of Paranoid Thinkers, By Shahram Heshmat, Psychology Today. February 24, 2016].