Why do we have enemies from whose words or acts we suffer? Because in
our limited physical consciousness we do not perceive the unity of all
life and realize that our wrong thinking and doing must react upon us
through other people--a situation from which there is no possible
escape except through ceasing to think evil and then patiently
awaiting the time when the causes we have already generated are fully
exhausted. When spiritual illumination comes, and we no longer stumble
in the night of ignorance, the last enemy will disappear and we shall
make no more forever.

Why do people suffer from poverty and disease? Only because of our
blundering ignorance that makes their existence possible for us, and
because we do not comprehend their meaning and their lessons, nor know
the attitude to assume toward them. Had we but the wisdom to
understand why they come to people, why they are necessary factors in
their evolution, they would trouble us no longer. When nature's lesson
is fully learned these mute teachers will vanish.

And so it is with all forms of suffering we experience. They are at
once reactions from our ignorant blunderings and instructors that
point out the better way. When we have comprehended the lessons they
teach they are no longer necessary and disappear.

Thus our evolution is going forward and has gone forward in the past.
We know that the human race has passed through a long evolution during
which it has acquired five senses by which knowledge is gained. Nobody
who has given thought to the subject will make the mistake of
supposing that this evolution is completed and that the five senses
are all we shall ever possess.