We write things down, both to help us remember, and to help us forget. –Naval

There's a genre of leftwing error that relies on knowing exactly one thing about a topic.  If you know two or zero you can't have the leftwing view.

Heard from a leftist lady today that Americans are fat because they're poor: Let's demolish this like a fat guy with a McDouble.

Everyone complains of his memory, and nobody complains of his judgment. -Francois de La Rochefoucauld

One of the links between Freud and Marx is their purportedly rational, scientific-sounding explanations for things. You get the same stuff from Magnus Hirschfeld, of Weimar Sex Clinic fame. A lot of what is going on is the academic laundering of a particular worldview.  -@threejacques