This is what Steve had to say about mortality in his 2005 Stanford Commencement Speech:
No one wants to die. Even people who want to go to heaven don’t want to die to get there. And yet death is the destination we all share. No one has ever escaped it. And that is as it should be, because Death is very likely the single best invention of Life. It is Life’s change agent. It clears out the old to make way for the new. Right now the new is you, but someday not too long from now, you will gradually become the old and be cleared away. Sorry to be so dramatic, but it is quite true.
Your time is limited, so don’t waste it living someone else’s life. Don’t be trapped by dogma — which is living with the results of other people’s thinking. Don’t let the noise of others’ opinions drown out your own inner voice. And most important, have the courage to follow your heart and intuition. They somehow already know what you truly want to become. Everything else is secondary.
Here’s the speech in its entirety:
Life in Pixels 
A true inspiration to us all. The world has witnessed the loss of a giant. A real genius who would definately stand by the greats of human history: Leonardo Da Vinci, Shakespeare etc. His creations, words of wisdom and inspiration and his amazing life story will forever remain in the minds and hearts of humanity. RIP Steve Jobs.