I came across this article, Yuval Noah Harari on the Ukraine War: “Human Stupidity Should Never Be Underestimated”, which reminds me of

Two things are infinite: the universe and human stupidity; and I’m not sure about the universe.

According to wikiquote, the origin of this quote is disputed.

I was just about to lament over the misfortune of the Ukrainian. But are our destinies any better? Who’s gonna stop someone audacious enough to change the Constitution? He can also reign as long as he wishes, and do whatever he pleases.