Polymorphism

In high-level programming, polymorphism is the ability of different objects
to respond differently to the same message.

public class Child : Human
{
    public override void Speak()
    {
        Console.WriteLine("I ask questions and imitate adults.");
    }
}

public class Adult : Human
{
    public override void Speak()
    {
        Console.WriteLine("I articulate responsibilities and desires.");
    }
}

public class Philosopher : Human
{
    public override void Speak()
    {
        Console.WriteLine("I question the very nature of language.");
    }
}

Polymorphism is the acknowledgment of uniqueness within universality.
It is the ability to be part of a system while retaining individual behavior.
It is — the poetics of code.

Because the same function can speak in every voice.
Because life is universal — but life’s answers are individual.
This is what makes a human a human,
and not just an instance of Human.