During the Middle Ages, philosophers and theologians argued over the extramental reality of universal forms or essences. In the early modern period, the relation between subjectivity and objectivity, the individual self and knowledge of the outside world, was a rich subject of debate. Today, there is considerable argument about the relation between spontaneity and determinism within the evolutionary process, whether a principle of spontaneous self-organization as well as natural selection is at work in the aggregation of molecules into cells and the development of primitive forms of life into complex organisms. In Subjectivity, Objectivity and Intersubjectivity, Joseph A. Bracken proposes that what is ultimately at stake here is the age-old problem of the relationship between the One and the Many, universality and particularity on different levels of existence and activity within nature.