  In his monumental discoveries, the driving force for Einstein was, I believe,
consistency of concept and principle rather than conflict with experiment. In
this spirit, I would like to look at the journey from the classical to the
relativistic world as a simple and direct exercise first in recognition of
universal character of universal entities and then carrying out the
universalization. By this process not only the relativistic world follows most
naturally but I would like to conjecture that if Einstein were born in 1844 (or
had I been born in 1844 and had followed this line of thought as I do now!) it
would have in fact been predicted including existence of a wave with universal
constant velocity. That would have indeed been not only the greatest but most
amazing and remarkable feat of human thought.
  Beating further on the same track of principle and concept driven ideas, we
ponder over to see beyond Einstein, and ask the questions: in how many
dimensions does gravity live, how many basic forces are there in nature and
what are the basic building blocks of space-time?
