[Aristotle] was the most eminent of all the pupils of Plato.... He seceded from Plato while he was still alive; so that they tell a story that [Plato] said, " Aristotle has kicked us off, just as chickens do their mother after they have been hatched.
Ignorance of all things is an evil neither terrible nor excessive, nor yet the greatest of all; but great cleverness and much learning, if they be accompanied by a bad training, are a much greater misfortune.
Is it not also true that no physician, in so far as he is a physician, considers or enjoins what is for the physician's interest, but that all seek the good of their patients? For we have agreed that a physician strictly so called, is a ruler of bodies, and not a maker of money, have we not?
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.
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.
If the study of all these sciences which we have enumerated, should ever bring us to their mutual association and relationship, and teach us the nature of the ties which bind them together, I believe that the diligent treatment of them will forward the objects which we have in view, and that the labor, which otherwise would be fruitless, will be well bestowed.
Plato is philosophy, and philosophy, Plato,--at once the glory and the shame of mankind, since neither Saxon nor Roman have availed to add any idea to his categories.