Christopher Rothko reads out the rules that his father, Mark Rothko, formulated in order to make a good work of art, in other words: the recipe for a great work of art, its ingredients, how to make it, its formula.

1 Death
There must be a clear preoccupation with death.
2 Sensuality
It is a lustful relationship to things that exist.
3 Tension
Either conflict or curbed desire.
4 Irony
This is a modern ingredient.
5 Wit and play
For the human element.
6 The ephemeral and chance
Also for the human element.
7 Hope
10%. Just enough to make the tragic more endurable. I think this is an example of my father’s great love of irony, but I think if we take him to seriously we’re in trouble.

Source: Dutch documentary De stilte van Rothko [Rothko's Silence] in which film maker Marojoleine Boonstra interviews Mark Rothko's son and his biographer among others. Worth the watch!