He was awesome.
I'd say Dr. Thomas Sowell is the nearest equivalent we have today.
Sowell studied under him at Chicago.
“As a professor, he did not attempt to convert students to his political views. I made no secret of the fact that I was a Marxist when I was a student in Professor Friedman’s course, but he made no effort to change my views. He once said that anybody who was easily converted was not worth converting.
“I was still a Marxist after taking Professor Friedman’s class. Working as an economist in the government converted me.”