This text explores the nature of art and its purpose. It argues that art is a means of communication between human beings and that all means are equally appropriate. The author emphasizes that nature is the means, not the goal, and that if one can achieve something by changing nature, then one must do so. The text also discusses the importance of mood in art and the irrelevance of whether a picture resembles nature. Finally, the author asserts that art must be created with one's lifeblood and that it is a means of opening one's heart to others.