Louis Pasteur (1822 – 1895) was a French chemist and best remembered for his remarkable breakthroughs in the causes and preventions of disease. His discoveries reduced mortality from puerperal fever, and he created the first vaccine for rabies. His experiments supported the germ theory of disease. He was best known to the general public for inventing a method to stop milk and wine from causing sickness, a process that came to be called pasteurization. In Pasteur's early career as a chemist, he worked on chirality and the polarization of light and crystallography.
Chaim Weizmann, (1874 – 1952) was the first President of the State of Israel. Weizmann was also a chemist who developed the ABE-process which produces acetone through bacterial fermentation. He founded the Weizmann Institute of Science in Rehovot, Israel.
Justus von Liebig (1803 – 1873) was a German chemist who made major contributions to agricultural and biological chemistry, and worked on the organization of organic chemistry. As a professor, he devised the modern laboratory-oriented teaching method, and for such innovations, he is regarded as one of the greatest chemistry teachers of all time. He is known as the "father of the fertilizer industry" for his discovery of nitrogen as an essential plant nutrient. The vapor condensation device he popularized for his research is still known as a Liebig condenser.
"Knowledge belongs to humanity, and thus science knows no country and is the torch that illuminates the world. Science is the highest personification of a nation because that nation will remain the first which carries the furthest the works of thought and intelligence." ~ Louis Pasteur