Your school teacher. I was amazed when i said to a colleague i'd known for years when he said he was a racist.
He said, "I had a bad experience with an aboriginal. You don't know them."
A bit shocked i said, "Warren. that sounds racist."
He: "I am."
Me: "Well that's just stupid to make generalizations like that."
And thought that explains why you were always only a colleague and never a friend.
It was Plato who said, “He, O men, is the wisest, who like Socrates, knows that his wisdom is in truth worth nothing”