Do not speak about your money in front of a poor person.
Do not speak about your health in front of a sick person.
Do not speak about your power in front of a weak person.
Do not speak about your happiness in front of a sad person.
Do not speak about your freedom in front of a prisoner.
Do not speak about your children in front of an infertile person.
Do not speak about your mother and father in front of an orphan.

Because their wounds cannot bear more.