Psychology is an art form in the fact is learning and understanding more about the most complex creature of them all, us humans!!! (that we currently know)
To learn, understand, connect, express emotions and feelings is essentially the primary goal of psychology.
Psychology is extreme dedication to understanding not the aesthetics of a person but the very essence of a person and the ways in which they are different and similar to others.
If one could sufficiently understand a persons expressive emotions, personality and personal perspective about the world, this would create a mental picture in ones mind of the another persons state of mind. This is not dissimilar to a painting a portrait; to capture a moment in time expressing the personality and emotion of the person being painted.