Are There Any Humans Who Do Not Lie?

supposedly there was some guy named diogines, who went around looking for an honest man and never found any.
but so what. how does this make an excuse for screwing everything up?
or an unwillingness to attempt to avoid deceiving one's self and others?

we are not locked by nature into anything other then having to eat and breathe to stay alive.

nothing in 'heaven' or earth, the nonphysical nor the physical, denies us the opportunity and choice, to be considerate of all things.