The best calculation is the absence of calculation. Once you have attained a certain level of recognition, others generally figure that when you do something, it's for an intelligent reason. So it's really foolish to plot out your movements too carefully in advance. You're better off acting capriciously.
Pablo PicassoWhen I enter the studio, I leave my body at the door the way the Moslems leave their shoes when they enter the mosque, and I only allow my spirit to go in there and paint.
Pablo Picasso