René Descartes (31 March 1596 – 11 February 1650) was a French philosopher, mathematician, and scientist. Dubbed the father of modern philosophy, much of subsequent Western philosophy is a response to his writings, which are studied closely to this day.His best known philosophical statement is "Cogito ergo sum" (French:Je pense, donc je suis; I think, therefore I am)

Antoine Lavoisier was a French nobleman and chemist central to the 18th-century chemical revolution and had a large influence on both the history of chemistry and the history of biology. He is widely considered in popular literature as the "father of modern chemistry". This label, however, is more a product of Lavoisier's eminent skill as a self-promoter and underplays his dependence on the instruments, experiments, and ideas of other chemists.

André-Marie Ampère) (20 January 1775-10 June 1836 ) was a French physicist and principal founder of electromagnetism and electrodynamics. He was also a mathematician, engineer and lecturer. He believed that the magnetic forces caused by moving and not the property electric charge . He explained magnetism of materials. In his honor was named the unit of electrical current .

Louis Pasteur was a French chemist and microbiologist renowned for his discoveries of the principles of vaccination, microbial farmentation, pasteurization and for his remarkable breakthroughs in the causes and preventions of diseases and his discoveries have saved countless lives ever since. He reduced mortality from puerperal fever, and created the first vaccines for rabies and anthrax.

Jean-Baptiste le Rond d'Alembert (17 November 1717 – 29 October 1783)  was a French mathematician, mechanician, physicist, philosopher, writer and music theorist. Until 1759 he was also co-editor with Denis Diterot of the Encyclopédie.He did some outstanding developments in the field of mathematics, particularly, in the ‘foundations of mathematics’. The “d’Alembert theorem” and the “ratio tests” (a test to check if a “series” unites) developed by him is followed in mathematics even now. He expressed a fair amount of interest in physics as well, and came up with the “d’Alembert operator”.

By Fragkiskos Papadakis

François Jacob (17 June 1920 – 19 April 2013) was a Frenchbiologist who, together with Jacques Monod, originated the idea that control of enzyme levels in all cells occurs through regulation of transcription. He shared the 1965 Nobel Prize in Medicine with Jacques Monod and André Lwoff.

Pierre Curie was a French physicist, a pioneer in crystallography, magnetism, piezoelectricity and radioactivity. In 1903 he received the Nobel Prize in Physics with his wife, Marie Skłodowska-Curie, and Henri Becquerel, "in recognition of the extraordinary services they have rendered by their joint researches on the radiation phenomena discovered by Professor Henri Becquerel".

Pierre-Simon, marquis de Laplace  French: 23 March 1749 – 5 March 1827) was an influential French scholar whose work was important to the development of mathematics, statistics, physics, and astronomy. He summarized and extended the work of his predecessors in his five-volume Mécanique Céleste (Celestial Mechanics) (1799–1825). This work translated the geometric study of classical mechanics to one based on calculus, opening up a broader range of problems. In statistics, the Bayesian interpretation of probability was developed mainly by Laplace