Jacobo Pontormo was a Florentine master who painted anxious figures. He anticipated expressionism but was out of his time and other painters considered him a weirdo. The last 10 years of his life he worked on a single painting and refused to show it to anyone.
His withdrawn personality was similar to Michelangelo but very different from Leonardo. Amongst the great masters Leonardo da Vinci was the most sociable.
Libido is important but sometimes nightmares come from the dark, and fears inherited from the primitive jungle; They also are important.