The purpose of this thesis is to examine the letters of Diderot to Sophie Volland for the year 1759 as they are a source of important autobiographical, social, and psychological elements that shed light on Diderot's private and public life. In fact a turning point in the sentimental relationship between Diderot and Sophie Volland, the death of his father, the difficulties experienced in publishing the Encyclop6'die and consequently the coolness in his friendship with D'Alembert make 1759 a crucial year in Diderot's life. The conclusion reached is that the stylistically beautiful and modern letters to Sophie Volland of this year are self-revelatory for they show that the events of 1759 made a great psychological impact upon Diderot and started a process of maturity in his character. These letters can undoubtedly be considered a major part of Diderot's work and they can certainly contribute to a deeper understanding of this genius.

The thesis states that women characters in the works of Ramuz have much more depth, life and variety than first meets the eye. In order to demonstrate this, it was decided to show women characters, main, secondary and in groups, and to look at their presentation in the novels recognized generally as the most important.

Stéphane Mallarmé, 1842-1897, was driven by a yearning for the ideal, and felt an immense despair when his human attempts to reach up to it, through his poetry, fell far too short. The void (le Néant) into which he fell is the subject of the present study. Sources used were the writer's poetry, as well as all critical works which seemed pertinent to the study of this poet whose symbolism is so wonderfully and yet frighteningly deep and meaningful.

Four themes dominate Balzae's Pere Goriot: Paris, ambition, money, superman. Paris is described physically, socially and morally all strata of society are cruel and corrupt. The contrast between poverty and luxury arouses the ambition of young provincial Rastignae. While his ambition is mainly social, most of the characters of the novel have financial ambitions; money is their only valued Vautrin would kill and Goriot's daughters would reduce their father to pauperism for profit. Beth Vautrin and Goriot are presented as supermen, but while the former is a strong-willed ruthless ex-convict, the latter is a monomaniac, utterly blinded by paternal love. The four themes reflect contemporary society as well as Ralzac's own life and character. They recur throughout the Comdie Humalne but are skilfully condensed in Le Pere Goriot.