There are four causes. Painting as a natural science falls into these categories. As an Artist I have to consider each one carefully. The purpose of any activity, is to be fully engrossed in its form and to be excited about the source of change because, form, source of change and purpose, equate to the same thing, (Efficient Cause.) If it is a system that requires the control of accidents however, its legitimacy needs to be realised in some form or another. This is why I produce paintings and painting could be the reason why I attempt to apply this principle to other experiences. I have always been curious about whether it is effective in everyday life as well.