Le Corbusier
Charles-Édouard Jeanneret (6 October 1887 – 27 August 1965), known as Le Corbusier (), was a Swiss-French architect, designer, painter, urban planner, writer, and one of the pioneers of what is now called modern architecture. He was born in Switzerland and became a French citizen in 1930. His career spanned five decades, and he designed buildings in Europe, Japan, India, and North and South America.
Nicolas Le Camus de Mézières
Nicolas Le Camus de Mézières (March 26, 1721 – July 27, 1789) was a French architect and theoretician. He was born and died in Paris. He published several works on architectural and related subjects, including "Architecture of Expression, and The Theatre of Desire at the End of the Ancien Régime; Or, The Analogy of Fiction with Architectural Innovation".
Le Camus designed the "Halle aux blés" (Corn Exchange) with a circular central courtyard and a double staircase. 
The layout of that building has been retained in the present Bourse de commerce. Le Camus developed a theory of architecture in which the character of a building should express its destination or the social status of its client. Unlike previous character theories in architecture, Le Camus's theory was based on an explicit analogy between architecture and theatre. His architectural mode of expression followed a temporal progression similar to the dramatic unfolding of a play, and gradations in ornamentation throughout the interior of a building resembled a succession of stage sets in a theatrical performance.