The fundamental constants of physics

A natural system of fundamental physical units $c$, $\hbar$, and $m_p$ is discussed, where $c$ is the velocity of light, $\hbar$ is Planck's constant, and $m_p$ is the Planck mass, which is related to the Newtonian gravitational constant by the equation $m_p^2=\hbar c/G$. In a natural system of units, such questions as: “How does the anthropic nature of the physical universe arise? Is it unique, or does an infinite set of universes exist?” and “Are the fundamentals of the physical universe knowable and what is the strategy for knowing them?” become particularly urgent.