ape, and at last, man. If we remember that nature is always
consistent, that her laws are uniform and that whatever exists in the
microcosm exists also in the macrocosm, and then study nature, we
shall find that all the germs of life which exist in the universe are
bound to pass through stages resembling the embryonic types before
they can appear in the form of man.

In explaining the theory of Evolution, science says that there are two
principal factors in the process of evolution; the first is the
tendency to vary, which exists in all living forms whether vegetable
or animal; the second is the tendency of environment to influence that
variation, either favorably or unfavorably. Without the first,
evolution of any kind would be absolutely impossible. But the cause of
that innate tendency to vary is still unknown to science. Upon the
second depends the law of natural selection. The variation must be
adapted to favorable conditions of life; consequently either the germ
of life will select suitable environments or vary itself in order to
suit the surrounding conditions, if they are unfavorable. But the
agent of this selective process is the struggle for existence, which
is a no less important factor. Thus Evolution depends on these three
laws: Tendency to vary, or variation, natural selection, and struggle
for existence. Science tries to explain through these three laws the
physical, mental, intellectual, moral and spiritual evolution of
mankind. But the theory of Evolution will remain unintelligible until
science can trace the cause of that innate "tendency to vary" which
exists in every stage of all living forms.

If we study closely we find that man's "self" consists of two natures,
one animal and the other moral or spiritual. Animal nature includes
all the animal propensities, desire for sense enjoyments, love of