The earth is round, so why to play it square? Beneath the sun and beneath the moon, in the clouds that sail gently by, everything is going round. Children dance in a ring; there is the Tour de France, and the bikes, and the eyes that look at them and frame them on the road... You leave your rectangles, your geometrical windows, and you go to the land of circles in action.... It's human nature to break through boundaries, to grow, to push towards freedom. Roundness is free; it has no beginning and no end.

Fernand Léger - The Later Years -, catalogue edited by Nicolas Serota, published by the Trustees of the Whitechapel Art gallery, London, Prestel Verlag, 1988, p. 41