If appearances are deceitful, then they do not deserve any confidence when they assert what appears to them to be true.
Diogenes LaertiusBias used to say that men ought to calculate life both as if they were fated to live a long and a short time, and that they ought to love one another as if at a future time they would come to hate one another; for that most men were bad.
Diogenes Laertius