Humanity is said to develop in a spiral fashion. This is a drawing for the monument to the Communist International, designed by Tatlin in 1919.
The project as it could be completed
The tower was said to represent the aspirations of Soviet Russia and a challenge to the Eiffel Tower as the foremost symbol of modernity.
The tower is also known as a monument to the III International.
Also see:fractals, a spiral, Vladimir Tatlin