John Bagby

The discussions of conatus – force, tendency, effort, and striving – in early modern metaphysics have roots in Aristotle’s understanding of life as an internal experience of living force. This paper examines the ways that Spinoza’s conatus is consonant with Aristotle on effort. By tracking effort from his psychology and ethics to aesthetics, I show there is a conatus at the heart of the activity of the ψυχή that involves an intensification of power in a way which anticipates many of the central insights of early modern and 20th century European philosophy. The first section outlines how Aristotle’s developmental conception of the soul as geometrically ordered lays the foundation for his understanding of effort. The developmental series of powers of the soul are analogous to the series of shapes in mathematics. The second section links the striving of the soul to the gradual acquisition of virtues as a directed activity unifying multiplicity. The third examines the paradigm of self-awareness that Aristotelian effort involves. In the final section I show how ancient Greek theories of music were founded on the experience of striving. The “nature” of music is defined by Aristoxenus, and Theophrastus, in relation to the passion and intentionality of the soul. The geometrical order, as a synthesis of elements in geometry, music, or ethics, is a generative process in which past elements are retained and reintegrated in later stages of development. It requires effort to think geometrically, and the progress of knowledge itself is an integral aspect of all effort. Effort is the lived and self-aware cause which, moving step by step in an orderly and deliberate way, grows and advances upon itself. For both Spinoza and Aristotle, effort is the immanent intelligence which accomplishes what is in the purview of its understanding. Thus, will, in this conception of effort, is not something we already possess innately, but emerges gradually by an effort aimed at improvement.

In Bergson and Intensive Magnitude: Dismantling his Critique, Florian Vermeiren argues that Bergson’s critique of intensive magnitude in Time and Free Will is inconsistent with his later philosophy, and even inconsistent with the role of a “difference in degrees of freedom” in Time and Free Will. I argue that it is rather Vermeiren’s analysis which mischaracterizes Bergson’s critique and therefore the interpretation of an inconsistency cannot stand. In the first two sections I reevaluate Bergson’s critique, showing what, according to Bergson, are the good and bad senses of intensity, and how this critique allowed Bergson to institute a new conception of difference as expressed in concrete continuity. In the final section I examine the importance of infinitesimal thought in Bergson’s good sense of intensity.

There was a long and lively debate in Ancient Greece on the nature of music, spanning philosophy, cosmology, and psychology. Peripatetic musicology based its understanding of the nature of music on philosophical principles derived from Aristotle’s psychology in order to address debates among their predecessors, primarily to shift the focus away from the physical sounds or their mathematical ratios, towards the investigation of the psyche, which I show was a sort of proto-phenomenology. Music involves a voluntary activity accompanied by a natural joy. This joy grows and intensifies the energeia of the psyche. The nature of music is related directly to the nature, essence, or activity, of the psyche.

The role of intensity in Aristotelian philosophy is obscure. The problem has historically been approached through his logic and categorical sense of motion. Scholars have largely failed to consider the role of intensity in psychology and ethics, the consideration of which greatly clarifies the situation. To this end, I identify three types of intensity present in the corpus Aristotelicum: comparative, modal, inceptive. I show that the intensity of physical contraries is primary in nature but is different from those found in organic processes. I then show that the intensifications found in life, produced by the soul, are of paramount importance to Aristotle’s philosophy. Inceptive intensity is the backbone of psychical activities: concoction, sensation, pleasure, perception, effort, attention, and self-awareness. I outline two essential characteristics of these intensifications: (1) they imply an intransitive causality that is intrinsic to the entity’s nature or form; (2) that they involve an interaction of many parts which mutually amplify each other so that the whole is beyond (irreducible to) the totality of the parts. I end by comparing Aristotle’s views on intensity to contemporary ideas of emergence: feedback, holism, intentionality, and supervenience.

Henri Bergson's philosophy is centered on forming a concept of lived time or durée, which he saw as a process of continuous variation and flux. He believed that the study of time should be the foundation of philosophy. By studying time, we find an integration of concrete, infinite, qualitative multiplicity within consciousness that we should use to understand the essence of reality. I show that his insights into the reality of duration come directly from a metaphysical or phenomenological interpretation of integral and differential calculus. Drawing on the recently published lectures from 1902–1905, I show how An Introduction to Metaphysics schematizes the methodology of Matter and Memory and Time and Free Will by means of this mathematical analogy. To Bergson, the concepts of calculus are not mere metaphors; they unleash certain metaphysical implications that problematize the mind's relation to movement, life, consciousness, time, and consequently, reality itself.