Insight: “There is an almost universal tendency, perhaps an inborn tendency, to suspect the good faith of a man who holds opinions that differ from our own opinions… It obviously endangers the freedom and the objectivity of our discussion if we attack a person instead of attacking an opinion or, more precisely, a theory.” —Sir Karl Popper (1902-1993)

Grand delusions: “If you think a woman can’t beat Donald Trump, Nancy Pelosi does it every single day.” —Sen. Amy Klobuchar

Dezinformatsiya: “To deny that the president did not do something wrong at this point is… it’s… it’s mental. It is mental. If you can look at the mountain of evidence and say, ‘Oh, nothing’s wrong — the president didn’t do anything wrong, he’s just rooting out corruption,’ you’ve got a problem because that is not what happened… The problem is you.” —CNN’s Don Lemon

Huh? “I’m part of that Obama coalition. I come out of the black community, in terms of my support.” —Joe Biden

The BIG Lie: “Police violence is gun violence too, and we must speak out for black and brown people who often don’t have an effective first chance at life.” —Julian Castro

Non compos mentis: “If there are parts of the wall that are not useful in our defense, of course we should [remove it]. The real point here is that we need to stop this man-made crisis at the border. Trump is the one who has created this crisis, and he has done it in no small part by helping destabilize the governments even further in Central America.” —Sen. Elizabeth Warren

What could possibly go wrong? “By the way, the fossil-fuel industry is probably criminally liable, because they have lied and lied and lied when they had the evidence that their carbon products were destroying the planet, and maybe we should think about prosecuting them as well.” —Sen. Bernie Sanders

And last… “The president of the United States and the brave journalists in California are being pummeled by powerful liberal elitists who will stop at nothing to destroy them. If they can overthrow an election and destroy the First Amendment, imagine what they will do to you if you get under their skin.” —Rebecca Hagelin