What is the author's perspective in the nonfiction book, The Worldly Philosophers?

The author wrote the book while working as a freelance writer while attending Harvard graduate school in economics. He is well qualified to write a book of this nature since he is an economist. His biggest reason for writing was that he needed money at the time. Heilbroner writes in a very readable manner. There is not a lot of theory presented since he picks one or two points for each author and discusses them in everyday language understandable by all audiences. The author spends as much time presenting the life of the worldly philosopher as he does discussing his theories, saving reader from a too dense foray into the economics.