Educated at the Nancy Lycee, Poincare excelled in mathematics and graduated in 1871. He served in the Ambulance Corps during the Franco-Prussian War and afterwards returned to study at the Ecole Polytechnique where he graduated in 1876. He then entered the Ecole des Mines where he continued his mathematical studies, in addition to mining engineering. In 1879, he joined the Corps des Mines as an inspector and performed admirably. Later that year he received his doctorate from the University of Paris for his work on differential equations. From 1881 to 1885, he worked as an engineer for the Ministry of Public Services and also, from 1881, taught at the Sorbonne, first as an associate professor of Analysis and later as the Chairs of Physical and Experimental Mechanics, Astronomy, Mathematical Physics and Theory of Probability. He was elected to the French Academy of Sciences in 1887. In 1893, he joined the Bureau des Longitudes and was instrumental in proposing international time zones. In 1899, he intervened in the Dreyfuss trial, reputing evidential claims. In 1906, he became the President of the Academy of Sciences and in 1909 was elected to the Academie Francaise. Poincare's contributions to mathematics are astounding and include algebraic topology, the theory of analytic functions, algebraic geometry, hyperbolic geometry, number theory, electromagnetism, and the special theory of relativity. The latter work was instrumental in influencing Einstein and others that came after him. His many works include *New Methods of Celestial Mechanics* (1892), *Science and Method* (1897), *Science and Hypothesis* (1901), *The Value of Science* (1904), *Lessons of Celestial Mechanics* (1905) and *Last Thoughts* (1913 posthumous). |