Aristotle was an Ancient Greek philosopher and scientist who is still considered one of the greatest thinkers in politics, psychology, and ethics.

According to Aristotle’s ethical theory, the virtuous person exhibits the joint excellence of reason and character. The virtuous person not only knows what the good thing to do is but is also emotionally attached to it.

Aristotle, talking about logic and virtues, also said:

A. All people are equal. One person's life is the same as another's. The happiness of one person is equal to another.
This is Logical Truth.

B: Mine affects me more.
Example:

If someone steps on my foot, it hurts. It hurts more when they step on my foot because if they step on yours, it doesn't hurt.
If someone takes me some money, it affects me more than if they take it away from others.
If someone gives me a promotion, it affects me more than if they give it to someone else.

This is Psychological Truth

C. How is it possible that what happens to me affects me more if we are all equal? What should we do?

In those cases, we must take care more about others. I have to ensure that the people around me are fine and that my team is okay. If there is a fire, let others get out first, etc.
This is an Ethical Truth

This is a quest to understand and develop a life of virtues and moral character. This character assumes that we acquire virtue through practice. By practicing being honest, brave, just, generous, and so on, a person develops an honorable and moral character. According to Aristotle, by honing virtuous habits, people will likely make the right choice when faced with ethical challenges.