In heaven there is laid up a pattern which he who chooses may behold, and beholding, set his own house in order. The time has now arrived at which they must raise the eye of the soul to the Universal Light which lightens all things. With the eye ever directed toward things fixed and immutable which neither injure nor are injured - these they cannot help imitating. But I quite admit the difficulty of believing that in every man there is an eye of the soul which by the right direction is re-illumined, and is more precious far than ten thousand bodily eyes.
Plato...that in our state one man was to do one job, and the job he was naturally most suited for .. And further, we have often heard and often said that justice consists of minding your own business and not interfering with other people.
PlatoThose who have a natural talent for calculation are generally quick-witted at every other kind of knowledge; and even the dull, if they have had an arithmetical training, although they may derive no other advantage from it, always become much quicker than they would have been.
Plato