There are three cardinal rules - don't take somebody else's boyfriend unless you've been specifically invited to do so, don't take a drink without being asked, and keep a scrupulous accounting in financial matters.
W. H. AudenA person incapable of imaging another world than given to him by his senses would be subhuman, and a person who identifies his imaginary world with the world of sensory fact has become insane.
W. H. Auden