This thesis is a discussion of erotic love considered as a problem in the explanation of social action. Its primary focus is on attempts to create a general social scientific theory of love. I detect a tendency in theoretical discussions of love that see their task as one of providing an account of what love really means. I argue that such projects persistently misconstrue the nature of our talk about love by failing to see that love is a contested nonnative concept and that saying what love really means itself forms part of our moral disagreements. I discuss several current philosophical attempts to define love before moving on to a discussion of Descartes' Passions of the Soul. I suggest that Descartes' theory highlights the problems of attempting to fonnulate a self-consciously scientific theory of love but also that his ultimate recognition of limitations of mechanistic science offers the possibility of a non-reductive naturalism. I then proceed to discuss a currently fashionable attempt to explain love in reductive tenns in the fonn of evolutionary psychology. I locate evolutionary psychology within the individualist utilitarian tradition described by Talcott Parsons and suggest that it confronts ali the problems Parsons highlights in this tradition. More specifically, it has difficulties explaining the routine co-operation associated with love. I attempt to show how none of the versions of evolutionary psychology currently on offer deal with this problem effectively and that the only one which comes close, does so by breaking with key evolutionary psychological commitments. I conclude that evolutionary psychology cannot explain love since it cannot provide a robust account of nonnativity while maintaining its persistent individualism. In the concluding section, I discuss a group of approaches to the emotions which seem to take the normativity of love seriously. These are social constructionist theories. I distinguish between a defensible, mnemonic constructionism and an untenable ironic variety which denies the reality of everyday experience of human loving. I conclude that the best way to see love is as a matter of practical reason in the context of a contested moral form of life and discuss the relationship between love and virtue.

Though Dante never read Plato's dialogues on love, when examining the texts of Dante one notes the presence of Platonic thought and influence particularly concerning the notion of love. This thesis will focus upon the Platonic notion of eros and how it changes over time, ultimately being integrated into the Christian notion of love as understood by Dante, and how this Platonic influence is instantiated within Dante's poetry. The inherent ambiguity of the concept of love, evident historically through frequent debates concerning its value whether positive, negative or in-between, makes any investigation into the nature of love problematic, often aporetic. One aim of this thesis is to help overcome some of the aporiai of knowledge concerning love through focusing upon one form of love, eros or passionate desire, which we shall use in order to understand love more generally through exploring its points of intersection and overlapping with certain other types of love, each of which emphasizes different aspects of love's character differentiated through culture and period. Significantly eros, as perhaps the most ambiguous type of love, is often characterized negatively. Taking into account Nygren's negative view of eros which he sees as being wholly acquisitive and self-seeking as opposed to the thoroughly selfless Christian agape, we shall consider whether this view tells the full truth about eros. In this endeavour we shall explore the interrelationship of eros and understanding understood as a dialectic directed towards the pursuit of truth, which in both the Platonic and Christian traditions involves the permanent possession of the good, beautiful and true; these converge in Neo-Platonic tradition, forming a unity which in Christianity is identified with God. We shall also explore how various strands of eros relate to and articulate the notion of love of the individual. These explorations cast light on the transformation of Platonic eros by Christian agape into the Latin concept of caritas. In terms of procedure, we shall examine the notion of Platonic eros as presented in the Symposium and the Phaedrus and how this conception is reinterpreted in Dante's Commedia, these texts together acting as a lens which -will enable us better to comprehend the significance of Bros, and of love more generally, through the transformation of eros over time.

Le but principal de cette thèse est d'explorer le sentiment d'amour passionnel dans les relations romantiques. L'amour passionnel est définit comme « un état de désir intense à d'union avec un autre ». Ce construit est généralement considéré comme une expérience universelle fortement associée à l'attraction sexuelle et possédant un impact considérable sur les dimensions émotionnelles, cognitives et comportementales. Le but principal de cette thèse était d'apporter de nouveaux éléments montrant que les expériences subjectives de l'amour passionnel sont culturellement et contextuellement déterminées et qu'il existe néanmoins une certaine universalité des cognitions et comportements lorsque les personnes déclarent être amoureuses. De plus, nous avons étudié l'effet de l'amour passionnel sur les processus cognitifs. Au total, 1000 étudiants ont participé à 4 études différentes. Des sujets français et brésiliens ont répondu à l’Échelle d'Amour Passionnel (PLS) dans le but d'étudier leurs sentiments d'amour passionnel sur la base des composantes cognitive, émotionnelle et comportementale. Les représentations sociales de l'amour passionnel de ces mêmes groupes ont été explorées à partir d'analyses structurelles d'associations de mots. Les processus cognitifs de l'amour passionnel ont été testés dans une étude sur la relation entre l'amour passionnel et les expériences sensorielles et une étude sur l'effet de l'amour passionnel sur les productions créatives. Les résultats obtenus avec la PLS ont montré les mêmes propriétés psychométriques en France et au Brésil. Dans les deux cas, l'analyse factorielle a révélé une composante principale avec des consistances internes élevées. Les sujets qui ont déclaré être amoureux ont semblé aimer avec le même niveau de passion dans les deux cultures mais des différences de genre ont été retrouvées au Brésil. L'analyse des associations de mots a indiqué des différences contextuelles, culturelles et de genre. En ce qui concerne les processus cognitifs, l'amour passionnel a un effet positif sur l'attraction physique et l'expérience sensorielle mais nous n'avons pas trouvé de relation entre l'amour passionnel et la créativité (pensées divergentes et convergentes). Les résultats de ces différentes études sont présentés et discutés en s'appuyant sur les perspectives interculturelle, neuropsychologique et évolutionniste de l'amour romantique. L'amour passionnel peut être vécu de plusieurs façons mais ses manifestations sont universelles. Nous concluons que l'amour passionnel est principalement un phénomène biologique qui peut être influencé par la culture, assurant des reproductions réussies de notre espèce. / The main goal of this thesis is to explore the romantic feelings of passionate love widely defined as a state of longing with another. This construct is generally considered to be a universal experience strongly associated with sexual arousal and capable of having a strong effect in emotional, cognitive and behavioral dimensions. The main goal of this project is to provide further evidence about the contention that although subjective experiences of passionate love are culturally and contextually determinate, people all over the world present the same symptoms of passionate love with the same intensity when they consider being in love. Plus, the influences of passionate love on cognitive processes were tested in other studies. A total of 1000 college students participated in 4 different studies. The Passionate Love Scale (PLS) was administrated on Brazilian and French subjects in order to explore their evaluation of passionate love through cognitive, emotional and behavioral components. The social representations of these same groups about passionate love were explored with a structural analysis of word associations. Cognitive processes were tested through one study about the relationship between passionate love and sensory experience and another one about the effect of passionate love in creative productions. The results found with the PLS indicated the same psychometric properties in France and in Brazil. In both cases, the factorial analysis indicated one stronger dimension with high internal consistencies. Subjects in love seemed to love with equal passion in both cultures but gender differences were found in Brazil. The analysis of the word association revealed contextual, cultural and gender differences. Passionate love had a positive effect in low cognitive processes (physical attraction and sensory experience) but no effect in high cognitive tasks (divergent and convergent thinking). The results of these different studies are presented and discussed in the light of cross-cultural, neuropsychological and evolutionary perspectives on romantic love. Passionate love might be experienced in a number of ways but its manifestation is universally the same. It is concluded that passionate love might be mainly a biological phenomenon with minor cultural variations directed to insure reproductive success in our species.