ars in the
United States have revealed some startling facts--facts which only prove
again that Human Analysis shows us the truth about ourselves as no
science has ever shown it to us before.

One of the most illuminating facts these surveys have revealed is that
_only those men and women can be happy together whose natures
automatically encourage each other in the doing of the things each likes
to do, in the way each likes to do them_.

Inborn inclination determines the things every human being prefers to
do, concerning all the fundamental activities of his life, and also the
manner in which he prefers to do them. These inborn inclinations, as we
have previously pointed out, are written all over us in the unmistakable
language of type.

When we know a man's type we know what things he prefers to _do_ in
life's main experiences and _how_ he prefers to do them. And we know
that unless he is permitted to do approximately what he _wants_ to do in
approximately the _way_ he prefers, he becomes unhappy and unsuccessful.

Infatuation No Guide

These biological bents are so deeply embedded in every individual that
no amount of affection, admiration, or respect, or passion for any other
individual suffices to enable any one to go through long years doing
what he dislikes and still be happy. Only in the first flush of
infatuation can he sacrifice his own preferences for those of another.

After a while passion and infatuation ooze away. Nature sees to that,
just as she sees to their coming in the first place. Then there return
the old leanings, preferences, tendencies and cravings inherent in the
type of each.

The Real "Reversion to Type"

Under this urge of his type each reverts gradually but irresistibly to
his old habits, doing largely what he prefers to do in the ways that are
to his liking. When that day comes the real test of their marriage
begins. If the distance between them is too great they can not cross
that chasm, and thereafter each lives a life inwardly removed from the
other.

They make attempts to cross the barrier and some of these are successful
for a short while. They talk to and fro across the void sometimes; but
their communings become less frequent, their voices less distinct, until
at last each withdraws into himself. There he lives, in the world of his
own nature--as completely separated from his mate as though they dwelt
on different planets.

We Can Know

"But how is one to know the