Being on Time is the Biggest Respect that You can Give

Today I had a lunch appointment at 1130 am. I arrived on time. The person was 40 minutes late. This person knows that I have arrived on time but still choose to be late without giving me any explanation. After forty minutes of lunch with this person, I decided to leave. Obviously, the person was not too pleased that our meeting was only 40 minutes. However, this person has to respect my time. This person proposed the time and I arrived on time. There is no reason for this person to be late. Time is a non-renewable resource, please respect other people's time.