Is there a more important racing mantra than "slow in, fast out?"

"Bring the car in 1 piece"

 

Don‘t try to overtake Max Verstappen

 

"line is everything."

 

One of Schumacher's many superiorities in his driving was actually his entry-speed. Of course slow-in, fast-out is the most important but Schumacher was able to, say, make his entry-speed 8% better while only loosing, say, 2% on exit. I'm just using arbitrary numbers as an example.

Also, this is for when someone is already an advanced or expert driver. We're talking about tenths of a second on the bleeding-edge of what the car's capable of.