e you enough of whatever is needed to tide you over.
If you don't, she says you are not fit to people the earth and lets you
go without a pang. Thus she weeds out all but the strong--and evolution
marches on.

Causes of Racial Characteristics

This inherent potentiality for altering the organism to meet the
demands of the environment is especially noticeable in races and is the
reason for most racial differences.

Differences in environment--climate, altitude and topography
necessitated most of these physical differentiations which today enable
us to know at a glance whether a man belongs to the white race, the
yellow race, or the black race. The results of these differentiations
and modifications will be told in the various chapters of this book.

Types Earlier than Races

The student of Human Analysis reads the disposition and nature of
every individual with ease regardless of whether that individual be an
American, a Frenchman, a Kaffir or a Chinaman, because Human Analysis
explains those fundamental traits which run through every race, color
and nationality, according to the externals which always go with those
traits.

Five Biological Types

_Human Analysis differs from every other system of character analysis
in that it classifies man, for the first time, into five types according
to his biological evolution._

It deals with man in the light of the most recent scientific
discoveries. It estimates each individual according to his "human"
qualities rather than his "character" or so-called "moral" qualities. In
other words, it takes his measure as a human being and determines from
his externals his chances for success in the world of today.

These Rules Work

Every rule in this book is based on scientific data, has been proved
to be accurate by investigations and surveys of all kinds of people in
all parts of the world.

These rules do not work merely _part_ of the time. They work _all_ the
time, under all conditions and apply to every individual of every race,
every color, every country, every community and every family.

Through this latest human science you can learn to read people as easily
as you read books--if you will take the little time and pains to learn
the rules which compose your working alphabet.

Do What We Want to Do

It is easy to know what an individual will do under most circumstances
because every human being does what he _wants_ to do in the _way_ he
prefers to do it