Rand's stated goal for writing the novel was "to show how desperately the world needs prime movers and how viciously it treats them" and to portray "what happens to the world without them". The core idea for the book came to her after a 1943 telephone conversation with a friend, who asserted that Rand owed it to her readers to write fiction about her philosophy. Rand replied, "What if I went on strike? What if all the creative minds of the world went on strike?" Rand then began Atlas Shrugged to depict the morality of rational self-interest, by exploring the consequences of a strike by intellectuals refusing to supply their inventions, art, business leadership, scientific research, or new ideas to the rest of the world.