Paraphrased from " A Biography Of Milton Friedman"
..... "His childhood and youth revolved around family, school and faith. Milton remembers that he went through a fanatically religious phase. That he had an excessively religious phase as a young man is noteworthy, because it reflects the natural character of his mind - things must be consistent; they must be one way or the other.
He tends to go the whole way intellectually, or not at all, and seeks order and harmony in the universe. He was unable to achieve this through the logical observation of Orthodox Judaism. His genius was his philosophy of personal ideas, which extended to his economic theories of the "free-market". A natural and coherent economic system could be only achieved, based on the wants and needs of both the consumer,(demand),and manufacturer,(supply). Any forced set of rules and regulations (as in a Socialist-Marxist economic system)was doomed to failure. He is a naturalist and an empiricist.
He had a personality that of leadership and his ability to draw people to him. He had a remarkable exuberant personality. Among his extracurricular activities, he took violin lessons as a child. He was though non-musical, surprising, because musical ability is often linked to a high IQ, and a high mathematical ability"......
All great people are only one person.