Fundamental Physical Constants: Looking from Different Angles
  We consider fundamental physical constants which are among a few of the most important pieces of information we have learned about Nature after its intensive centuries-long studies. We discuss their multifunctional role in modern physics including problems related to the art of measurement, natural and practical units, origin of the constants, their possible calculability and variability etc. 
Savely G. Karshenboim (D. I. Mendeleev Institute for Metrology, St.   Petersburg, and Max-Planck-Institut fur Quantenoptik, ...