There's an old story about Picasso that starts with him sitting in a Paris café when an admirer approached and asked if he would do a quick sketch on a paper napkin. Picasso agreed, quickly sketched on the napkin, and, as he handed back the napkin, he asked for 1000.00.
The admirer was shocked: “How can you ask for so much? It took you a minute to draw this!”
“No”, Picasso said, “It took me 40 years to be able to draw that”.