Two of Magritte's favored themes were the "window painting" and the "painting within a painting." The Human Condition is one of Magritte's earliest treatments of either subject, and in it he combines the two, making what may be his most subtle and profound statement of their shared meaning.
The Human Condition displays an easel placed inside a room and in front of a window. The easel holds an unframed painting of a landscape that seems in every detail contiguous with the landscape seen outside the window. At first, one automatically assumes that the painting on the easel depicts the portion of the landscape outside the window that it hides from view. After a moment's consideration, however, one realizes that this assumption is based upon a false premise: that is, that the imagery of Magritte's painting is real, while the painting on the easel is a representation of that reality. In fact, there is no difference between them. Both are part of the same painting, the same artistic fabrication. It is perhaps to this repeating cycle, in which the viewer, even against his will, sees the one as real and the other as representation, that Magritte's title makes reference.
Infinite Recess: perspective and play in Magritte's La Condition Humaine:
The paintings of Rene Magritte, with their unsettling of common-sense relationships among objects, images and words, have been compared by many critics to the writings of Ludwig Wittgenstein. The 1933 painting La Condition Humaine, for instance, depicts a painting that exactly covers a `real' landscape outside a window - thus raising questions about the `location' of perception and thought. But Magritte's uncanny use of perspective, and his depictions of spaces that have ambiguous depth, suggest that an equally helpful interpretive framework to that of Wittgenstein may be that of psychoanalysis, particularly the object-relations theory of D.W. Winnicot and the latter's concept of `transitional phenomena'. La Condition Humaine, for example, exemplifies how, by both negating and affirming the opacity of the picture plane, perspective transforms the painting into a transitional object that is both `there' and `not there' simultaneously. Many of the painter's works, his `window' series in particular, suggest approaching Albertian perspective itself as a question of object-relating, the simultaneous search for autonomy and ontological security through play. An understanding of how Magritte's ambiguous spaces suggest both security as well as open-ended possibility can help to link his work not only with the traditions of Renaissance perspective and its modernist critics, but also with the aesthetic of the sublime and its iconography of colossal, indifferent nature. Sublimity may be interpreted psychoanalytically as nostalgia for the scale of childhood experience - for the world viewed as an enormous room in which small objects assume monumental physical and symbolic proportions.
http://www.ingentaconnect.com/content/bpl/ahis/2002/00000025/00000001/art00004;jsessionid=1mf7qmer0ros0.alice