“We are generally the better persuaded by the reasons we discover ourselves than by those given to us by others.”
Besides having a programming language named after him and a famous theorem, he points out the obvious.
You can’t tell most people anything. They have to learn it themselves and usually the hard way. Today’s toxic political environment is a perfect example, no matter which side you take.
It’s just how many times do you have to bang your head against the wall until you realize that it hurts?
Delusions of Adequacy 