Blaise Pascal was a French mathematician, physicist, inventor, writer and Catholic theologian. He was a child prodigy who was educated by his father, a tax collector in Rouen. Pascal's earliest work was in the natural and applied sciences where he made important contributions to the study of fluids, and clarified the concepts of pressure and vacuum by generalising the work of Evangelista Torricelli. Pascal also wrote in defence of the scientific method.
Elon Reeve Musk is a South African-born American Canadian business magnate, investor,engineer, and inventor. He is the founder, CEO, and lead designer of SpaceX; co-founder, CEO, and product architect of Tesla, Inc.; and chairman of SolarCity. In December 2016, he was ranked 21st on the Forbes list of The World's Most Powerful People. As of February 2018, he has a net worth of $20.8 billion and is listed by Forbes as the 53rd richest person in the world.