This is how individual births differ

CWSV Volume 3

In all these children one desire is common, the attachment to their parents. That they have all in common. They were all attached to that home, or to those surroundings, but their other desires were different so it is that one comes into this world by one road, another comes by another road, but all meet fit the same crossing.

Children Suffer From Diseases Peculiar To Their Parents

CWSV Volume 3

Here is a man with lower desires in predominance. These carnal desires had to be fulfilled, at the same time they must be given up; that is the law. Because this authority in you asked for the gratification of these desires, they must be satisfied, and at the same time, as these desires are being gratified, there come pain, sorrow and suffering; this pain and suffering will free you of that weakness. This is the result of his hating his surroundings which at the same time he has to endure.

We Rise From The Imperfect To The Perfect

CWSV Volume 3

A man may try today to fall back, nay, may do his best to live the life of a lower animal. He may try to push out of his mind all higher or finer feelings, and if he really succeeds in making a monkey of himself, and in making his desires nothing but animal desires, then of course he will be born a monkey in the next incarnation. But man cannot do that, for there are other forces which prevent him. Now what are those forces? What are called sorrow, trouble and suffering, lire the guaranteed agencies against any falling back.

Give The Line Of Demarcation Between Virtue And Vice

CWSV Volume 3

There are some people who have recently come from the animal body, and stepped into a human body, and they must necessarily have animal desires predominant. They have recently left the bodies of wolves, tigers, dogs, hogs, &c, and must have more of those desires in them. By the Law of Inertia, everybody remains in uniform motion in a straight line so long.