It is an understanding that the values of integrity and respect are vital for trust to exist while acknowledging that people often need more objective guarantees. A handshake ought to be enough to solidify an agreement, but sometimes impersonal institutions and codes of law are necessary evils.
There are no laws that cannot be disobeyed, except the laws of nature. Rules are really just inventions of human imagination and institutions are shared myths. Some are useful, some are not, but they are required for managing large numbers of people.
As someone with rational anarchist sympathies, I go along in order to get along. When laws are beneficial, I have no problem obeying them, but rules only work as long as everyone agrees to follow them. When the system is unjust, such as when the law is applied inconsistently, I have a hard time respecting it.
I always endeavour to live up to my word and honour my agreements, as long as I am being respected in the arrangement. I don’t normally trust people who lie or act in bad faith and I wouldn’t expect the same in return.
This anarchist rationale is the basis of all of my relationships.