We recognise truth when we hear it but not in our minds, rather we feel it in our hearts. Perhaps that is why John Lennon's song "Imagine" is so popular...

"Imagine there's no heaven,
It's easy if you try,
No hell below us,
Above us only sky,
Imagine all the people
living for today...

Imagine there's no countries,
It isn't hard to do,
Nothing to kill or die for,
No religion too,
Imagine all the people
living life in peace...

Imagine no possessions,
I wonder if you can,
No need for greed or hunger,
A brotherhood of man,
Imagine all the people
Sharing all the world...

You may say I'm a dreamer,
but Im not the only one,
I hope some day you'll join us,
And the world will live as one."