Two Cosmological Limericks

Philip K. Dick:

Determinist forces are wrong,
Though irresistibly strong.
But of god there's a dearth,
For he visits the earth,
But not for sufficiently long.

or:

Determinist forces are wrong,
Though irresistibly strong.
But of god there's no dearth,
For he visits the earth,
But just for sufficiently long.

Choose one.