Surrender.
Surrender is a study which tries to bind the conception that we have of seeing the shapes of clouds.
It is very known that we see various frequencies and the very world surrounding us is nothing but a combination of frequencies that we see. Thus appealing to the Magritte conception that the object that we see is not itself what we see, but our idea of that object is its true nature.
The clouds that we see in the sky are not clouds but our image of them, so they might as well be people.