The knowledge of death changes everything. If I told you the exact date and time of your own death, it would shatter your world completely.

I know.

Can you imagine what it feels like to have someone sit you down...

.. and tell you that you are dying?

The gravity of that?

That the clock is ticking for you.

In one second, your world
has been cracked open.

You look at things differently,
you smell things differently.

You savor everything, either a glass of
water or a walk in the park.

Most people have the luxury
not knowing when that clock will go off.

And the irony of that is, that not knowing,
that not realizing when your time is up,
is what keeps people living their lives.

It keeps them drinking that glass
of water but not really tasting it.

- John Kramer ( Saw 2 )