Heinlein has been a major influence on my worldview and my life. I know it sounds strange to say that about a science fiction author, but it’s true.
I grew up without a dad and without much guidance at all from my family. I spent a lot of time alone, and used to hang out in the library a lot - by grade six I was riding the bus downtown on my own to the public library, and I’d sit in there for hours while my mother was working.
My school had a copy of ‘Have Space Suit - Will travel’. I read that, and instantly had to have more. I went to the public library, and started signing out Heinlein’s juveniles. I’d read one every day, then go back for more. The library wouldn’t let you check out more than two books at a time, so I’d have to take the bus back there every couple of days to stock up. I raced through all the juveniles, then got permission to go into the adult section and get his other books. Eventually, I branched out into other science fiction, then more general literature and non-fiction. Those constant trips to the library to get my Heinlein fix exposed me to a lot more than Heinlein.
By the time I was in high school, I had probably read every Heinlein juvenile at least five times, and his other works at least twice. His characters were my father figures, and I tried to live my the moral rules laid out in those books. It kept me in school and it drove me to higher education when just about every other kid in my cohort dropped out. I even wrote a few letters to Robert to express my gratitude to him for keeping me on the straight and narrow and inspiring me to study science and engineering. Virginia responded to every one very personally (she did all his correspondence by that time).
I think Heinlein was a bigger influence on me than anyone in my own family or any of my teachers. I owed him a hell of a lot.
And even though it sounds crazy to say it, I think my experience was repeated by a lot of young people around that time. Heinlein’s influence extends far beyond most other writers in any genre. Ask any forty or fifty-something engineer, and you’re likely to find that they were influenced in part by Heinlein.
Heinlein is also considered to be one of the major influences of many libertarians. Perhaps second only to Ayn Rand in the number of people an author managed to convert to libertarian/free market philosophy, but Heinlein was more practical and more coherent than Rand, and had a better feel for political nuance and the limitations of any philosophy. Less dogma, more critical thinking.