At the time I wrote Methuselah's Children I was still politically quite naive and still had hopes that various libertarian notions could be put over by political processes… It [now] seems to me that every time we manage to establish one freedom, they take another one away. Maybe two. And that seems to me characteristic of a society as it gets older, and more crowded, and higher taxes, and more laws.
The Robert Heinlein Interview, and other Heinleiniana (1973) by J. Neil Schulman (published in 1990)