Why do people behave differently?
The usual answer is because they have free will can choose what to do.
To Christians it has an other answer: it is because of the degree of grace they receive and also the degree of their cooperation. Many others consider the influence of culture and breeding.
But how is it that small children act different from on another? One is sweet and pleasant, makes his parents happy and shows patience in illness, while the other is morose and cause of a constant sadness and exhaustion to all?
The above statement can be applied even to suckling, toddlers and those under the age of reason. So you cannot attribute it to free will and choice, neither can you say the it was the grace, since even among the pagan kids you can see the good and the evil.
hence the beliefe in "essence" comes forth.
According to this beliefe, every human being has an essence that can be good, very good, bad or very bad. It is independent of choices and actions. The Persian synonymes for essence is "jense", or "johar" or "zaat". While the first word can mean gender sometimes, it can be used in such a contex:
What is "jense" of this spoons?
This one is silver the other is broze and that one is wooden but sorry.. there is no one made of alluminium.
Well... they all have the same function. One uses spoon for eating.
The meaning of the word "jense" in this example is much near to the meaning one has in mind when he speaks about the different "essence" of different people. As you see in the example those spoons don't differ in their use for us (essence or "jense" is not about action) but they differ in what they are and how they are made.
Zaat (essence) is still a very common beliefe among my people. Some of them believe that legitimacy or illegitimacy, foods and drinks used by parents, and being conceived/born in special manners/times of the year can, effect essence of their children.
If catholics don't believe in essence, how do they explain good and bad behaviours in children under the age of 4?
(it can be applied to siblings, even to twins, so breeding or envirnment is not an answer)