Blaise Pascal’s observation about the indelible God-shaped hole or vacuum within each fallen human being is justly famous.  However, the larger context is less well-known, and yet I find the entire passage in Pensees to be brilliant:

The sovereign good.  Man without faith can know neither true good nor justice.  All men seek happiness.  There are no exceptions.  However different the means they may employ, they all strive towards this goal.  The reason why some go to war and some do not is the same desire in both, but interpreted in two different ways.  The will never takes the least step except to that end.  This is the motive of every act of every man, including those who go and hang themselves.

Yet for very many years no one without faith has ever reached the goal at which everyone is continually aiming.  All men complain: princes, subjects, nobles, commoners, old, young, strong, weak, learned, ignorant, healthy, sick, in every country, at every time, of all ages, and all conditions.

A test which has gone on so long, without pause or change, really ought to convince us that we are incapable of attaining the good by our own efforts.  But example teaches us very little.  No two examples are so exactly alike that there is not some subtle difference, and that is what makes us expect that our expectations will not be disappointed this time as they were last time.  So, while the present never satisfies us, experience deceives us, and leads us on from one misfortune to another until death comes as the ultimate and eternal climax.

What else does this craving, and this helplessness, proclaim but that there was once in man a true happiness, of which all that now remains is the empty print and trace?  This he tries in vain to fill with everything around him, seeking in things that are not there the help he cannot find in those that are, though none can help, since this infinite abyss can be filled only with an infinite and immutable object; in other words by God himself.

God alone is man’s true good, and since man abandoned him it is a strange fact that nothing in nature has been found to take his place: stars, sky, earth, elements, plants, cabbages, leeks, animals, insects, calves, serpents, fever, plague, war, famine, vice, adultery, incest.  Since losing his true good, man is capable of seeing it in anything, even his own destruction, although it is so contrary at once to God, to reason and to nature.

Some seek their good in authority, some in intellectual inquiry and knowledge, some in pleasure.

Others again, who have indeed come closer to it, have found it impossible that this universal good, desired by all men, should lie in any of the particular objects which can only be possessed by one individual and which, once shared, cause their possessors more grief over the part they lack than satisfaction over the part they enjoy as their own.

…this desire is natural to man, since all men inevitably feel it, and man cannot be without it.”