You should trust any man in his own art provided he is skilled in it.
For a man's house is his castle, et domus sua cuique tutissimum refugium [and one's home is the safest refuge to everyone].
Though the bribe be small, yet the fault is great.
So use your own property as not to injure that of another
A thing which is not in esse but in apparent expectancy is regarded in law.
Magna Charta is such a fellow, that he will have no sovereign