There's definitely bad stuff about long, but he has some damn good quotes. Here's some more:

"They've got a set of Republican waiters on one side and a set of Democratic waiters on the other side, but no matter which set of waiters brings you the dish, the legislative grub is all prepared in the same Wall Street kitchen."

"A mob is coming here in six months to hang the other ninety-five of you damned scoundrels, and I'm undecided whether to stick here with you or go out and lead them"

"Hoover is a hoot owl and Roosevelt is a scrootch owl. A hoot owl bangs into the nest and knocks the hen clean off and catches her while she's falling. But the scrootch owl slips into the roost and scrootches up to the hen and talks softly to her. And the hen just falls in love with him, and the next thing you know there ain't no hen"

"Raise all the hell you want to, print what you want to. But we're going to have that medical school and every qualified poor boy can go."

"They say they don't like my methods. Well, I don't like them either. I really don't like to have to do things the way I do. I'd much rather get up before the legislature and say, 'Now this is a good law and it's for the benefit of the people, and I'd like you to vote for it in the interest of the public welfare.' Only I know that laws ain't made that way. You've got to fight fire with fire."

"I'd rather violate every one of the damn conventions and see my bills passed, than sit back in my office, all nice and proper, and watch 'em die."

Long definitely wasn't a leftist, but we should definitely learn from his populism. If Bernie had run using this sort of rhetoric, he'd still have lost because bourgeois elections are rigged, but he would have been cooler, and reached more people.