Pascal (Blaise 1623— 1662) is a famous French mathematician, physicist, philosopher and essayist. His outstanding contribution to physics was that Pascal's law was first put forward in 1653, for which he wrote a famous paper on liquid equilibrium and discussed the transfer of liquid pressure in detail. All kinds of hydraulic machinery made by applying this law have created countless miracles for mankind, and the intuitionistic principle he established has influenced some later philosophers, such as Rousseau and Bergson.