Whatever — the soup is getting cold. [Last sentence of a mathematical theorem in Leonardo da Vinci’s notebook, 1518] - Leonardo da Vinci

You will never have a greater or lesser dominion than that over yourself...the height of a man's success is gauged by his self-mastery; the depth of his failure by his self-abandonment. ...And this law is the expression of eternal justice. He who cannot establish dominion over himself will have no dominion over others.

"Further than this, influenced by Platonic thought, Leonardo's conception of painting was, as an intellectual state or condition, outwardly projected. The painter who practised his art without reasoning of its nature was like a mirror unconsciously reflecting what was before it. Although without a "manual act" painting could not be realized, its true problems — problems of light, of colour, pose and composition, of primitive and derivative shadow — had all to be grasped by the mind without bodily labour. Beyond this, the scientific foundation in art came through making it rest upon an accurate knowledge of nature. Even experience was only a step towards attaining this."

Our body is dependent on heaven and heaven on the Spirit.