Time, according to common belief, is unending and infinite.  The Universe, but not time, began with the Big Bang.  For if time had started only with the Big Bang there was no time before the Big Bang in which to create the components thereof.  So time apparently stretches back into the infinite past.  And time will go on for ever; it stretches off into the infinite future.  Or does it? 

Some current scientific theories are suggesting that at some point in the future time ceases to exist, or perhaps becomes frozen (which seems to amount to much the same thing).  Other theories suggest that time has no independent existence anyway; it is but an artificial construct of our existence; it exists only because we are measuring it.  (There’s a mind-bending article on the science of all this in the September 2010 issue of Scientific American, but you’ll need to subscribe or buy the magazine.)

It seems to me eminently reasonable that something as intangible as time is purely a human construct.  Do animals (cats or dogs, say) measure time?  Does one not need a level of self-awareness, an understanding of self, to be able to measure time?

Logically therefore, if time has no independent existence, I am immortal.  Consider …

Before I was born (or conceived, or attained pre-natal consciousness, depending how one wishes to measure these things) there was no time.  It was not part of my existence, because I didn’t exist and therefore couldn’t measure it.

Similarly when I die, time ceases.  Again I am no longer able to measure or observe it.

Ergo I have existed for all time, and am thus, by definition, immortal.

Strange mind-bending things these scientific theories of everything!  Bishop Berkeley eat your heart out!