We should appreciate that Grindelwald and Dumbledore might be genius masterminds in regards to everyone and everything… but not when it comes to each other. When it comes to each other, they’re fucking stupid.
Albus completely messing up the restaurant scene by the second sentence he utters (I know, I’ll ask him for a divorce, that’ll help) and then Gellert stepping forward to try to kiss Albus six minutes after attempting to murder Albus’ nephew.
Albus: Listen to me very carefully. There are three ways of doing things around here: the right way, the wrong way, and the way that I do it. You understand?