Your Google broken?
The Notebooks of Lazarus Long. Anyone you was even marginally familiar with Heinlein would recognized the quote instantly.
Anyway, the quote doesn't prove what you want it to:
Attempts to formulate a "perfect society" on any foundation other than "Women and children first!" is not only witless, it is automatically genocidal.
Put some ice on it.
He says nothing there aboout government. You carefully avoid any quotes that say anything about government, because they don't support your claim. For example, the quote I gave.