Space is waiting for our love, as I am longing for you; go with me, travelling through space.. [line in a poem of Klein himself] - Yves Klein

To project my mark outside myself – but I did it! [walking in the streets of Venice Klein wore a shirt imprinted with the marks of his own hands and feet].. .I found myself confronting everything that was psychological in me. I had proof that I had five senses, that I knew how to get myself to function! And then I lost my childhood...

I had left the visible, physical blue at the door, outside, in the street. The real blue was inside, the blue of the profundity of space, the blue of my kingdom, of our kingdom!. ..the immaterialisation of blue, the coloured space that can not be seen but which we impregnate ourselves with.. .A space of blue sensibility within the frame of the white walls of the gallery.

This period of blue monochrome was the product of my pursuit of the indefinable in painting which that master, Eugène Delacroix [Romantic French painter] was able to indicate even in his day.