It is not for man to seek, or even to believe in, God.
He only has to refuse his ultimate love to everything that is not God.
This refusal does not presuppose any belief.
It is enough to recognize what is obvious to any mind:
that all the goods of this world, past, present, and future, real or imaginary,
are finite and limited and radically incapable of satisfying
the desire that perpetually burns within us
for an infinite and perfect good.