“There is nothing in this world so permanent as a temporary emergency.”
Robert A. Heinlein book The Man Who Sold the Moon
The Man Who Sold the Moon (p. 100)
Short fiction, The Past Through Tomorrow (1967)

The Man Who Sold the Moon is the title of a 1950 collection of science fiction short stories by American writer Robert A. Heinlein.
“There is nothing in this world so permanent as a temporary emergency.”
Robert A. Heinlein book The Man Who Sold the Moon
The Man Who Sold the Moon (p. 100)
Short fiction, The Past Through Tomorrow (1967)
“Damnit! Nationalism should stop at the stratosphere!”
Robert A. Heinlein book The Man Who Sold the Moon
Source: The Man Who Sold the Moon