Paradise does not exist, but we must nonetheless strive to be worthy of it.

On earth there is no heaven, but there are pieces of it

The Expulsion from Paradise is eternal in its principal aspect: this makes it irrevocable, and our living in this world inevitable, but the eternal nature of the process has the effect that not only could we remain forever in Paradise, but that we are currently there, whether we know it or not.

The path to paradise begins in hell.

We'll tell him his mother waits for him in heaven, I suppose."
"Is that a lie?"
"It's what we tell fools and children." She sighed. "Postulating a heaven gives man an out for having been unable to retain the paradise he was given here on earth.

When I am a good host, I can order the world precisely as I believe it ought to be. It is a world that I have created in my mind and in my own image, and it gladdens me profoundly to see it unfold without original sin, without expulsions and floods and disobedience and illness. When I am a good guest, I have returned to Eden, where everything I need is provided for me, including companionship and a benevolent deity at my shoulder serving me and protecting me. The concept of paradise may be backward-looking but the concept of heaven is anticipatory. Perhaps this is what heaven will be like? A great table of oak worn smooth with age and candle wax; a dimly lit room, a quartet of angels playing Sarah Vaughan in the corner; this blissful throb of quiet, intelligent conversation; bubbling pots and aromatic stews that no one seems to have worked to prepare; and you - you have nothing to worry about, not now, not here, not for all eternity. Leave it all behind at the threshold, forget everything, for here in heaven, you are my guest.