He cannot see the sun. In the same way the events and actions of ourselves and of others obscure to us our inner selves. They hide from us our relation to the universe. They stand in the way of our vision and understanding. Another example we might use has to do with our own private thoughts.
Every person likes to feel important or powerful.
Thus, if we are mistreated or treated disrespectfully, we become angry. Perhaps we strike back at the offending person. Then we are both angry. Each day we use our capacity to breathe. On average, for example, each person breathes 27,000 times per day.