In an earlier study, De la féerie à la science-fiction, I tried to show the internal consistency and the chronological succession of fairy tales, fantastic stories and works of scientific anticipation or extrapolation. They represent three styles of the imaginary, and illustrate, each in its own way (“like hollow molds,” I said), the chief epochs of man's changing situation on his planet, as he himself saw it, more or less naively, in each case. First he depicted himself as powerless and wonderstruck; then confident in science and technology, he considered himself the fortunate conqueror of the planet; and finally he saw himself as isolated and marginal in the immensity of space—just at the very time when he was learning to move about in it.