Back in the ‘70s I was asked to contribute to an article that had quotes from many display pilots on how to stay safe. There were lots of detailed comments relating to specific manoeuvres seen as ‘secrets’ to safety by their authors. I felt something more general was called for so I said:
“Never use all of the aircraft’s performance, never use all of your own performance and if you don’t understand why these two things are the basis of safety then don’t fly low level demos.”