"One hand cleans the other, and both clean their faces" / Everyone needs Everyone
Yesterday I had to send my PC to be formatted, because it was very slow, so I told a cousin to do that job (of course I paid him anyway), and in that simple thing I realized that we all depend on each other, I need a service, he needs a job.
I know it sounds very logical, but it is a small sample that human beings need others to live directly or indirectly, as in my case.
Over there I heard the following phrase: "One hand washes the other and both wash their faces."
It's okay if you don't know the person who sells you something or the one who charges you for a service, let's maintain good manners above all, because tomorrow we wouldn't like to be treated badly like we treat waiters, traffic prosecutors, etc...
Let's share more and keep in mind that we need each other...