I am the owner of the sphere, Of the seven stars and the solar year, of Caesar's hand, and Plato's brain, Of Lord Christ's heart, and Shakespeare's strain.
Those 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.
So their combinations with themselves and with each other give rise to endless complexities, which anyone who is to give a likely account of reality must survey.
In politics we presume that everyone who knows how to get votes knows how to administer a city or a state. When we are ill... we do not ask for the handsomest physician, or the most eloquent one.
It is in the stomach of plants that development begins, and ends in the circles of the universe. 'Tis a long scale from the gorilla to the gentleman,--from the gorilla to Plato, Newton, Shakespeare,--to the sanctities of religion, the refinements of legislation, the summit of science, art, and poetry. The beginnings are slow and infirm, but it is an always accelerated march.
And all knowledge, when separated from justice and virtue, is seen to be cunning and not wisdom; wherefore make this your first and last and constant and all-absorbing aim, to exceed, if possible, not only us but all your ancestors in virtue; and know that to excel you in virtue only brings us shame, but that to be excelled by you is a source of happiness to us.
Until philosophers are kings, or the kings and princes of this world have the spirit and power of philosophy, and political greatness and wisdom meet in one, and those commoner natures who pursue either to the exclusion of the other are compelled to stand aside, cities will never have rest from their evils - no, nor the human race, as I believe - and then only will this our State have a possibility of life and behold the light of day.
Socrates and Plato are right: whatever man does he always does well, that is, he does that which seems to him good (useful) according to the degree of his intellect, the particular standard of his reasonableness.