Zhuang Zi, who dreamt of being a butterfly, and after his awakening posed himself a question: how does he… — Slavoj Žižek

'Father, why is the sky blue?' - the child is not really interested in the sky as such; the real stake of the question is to expose father's impotence, his helplessness in the face of the hard fact, to present the whole chain of reasons leading to it. The blue of the sky thus becomes not only the father's problem, but in a way even his fault. The sky is blue, and you're just staring at it like an idiot incapable of doing anything about it!

Memento mori should be read: don't forget to die.

Subject - (1) a person subject to political rule; (2) a free agent, instigator of its activity - subjects can realize themselves as free agents only by means of redoubling themselves as, only in so far as they project, transpose the pure form of their freedom into the very heart of the substance opposed to them; into the person of the subject-monarch as head of state.