Truth of life

Recently I was watching the movie "Zindagi na milegi dubara". There was an incidence in movie when Farhan Akhtar had asked naseeruddin shah to speak truth. He had replied the following line.

"Sach hota kya he. Sab ka khud ka version hota he sach ka."

"What is truth, everyone has their own version of truth"

That left me to think of it after completion of the movie. It's perfectly true. Except all universal truth, all truth has it's relative reference. Law of relativity, all truth depends on its reference rather than matter of facts.