The word silence is not enough to describe that. .
many artists from Surrealism has drawn this faceless soft creatures/shapes. Yes, his is very different from others.
This silence in his painting has motions, space, and life.
Maybe, that's from the softest part of our heart, the visualized inner peace.
in one of my meditation session, i had similar feeling - - -- in a dark blue vastness (it's not just color, the space has life!), a little bubble, kind of white, is floating into that and then away, one after another, very slow . . . till the sound of the ringing bell woke me up. . .
