No great mind has ever existed without a touch of madness.
It is impossible, or not easy, to alter by argument what has long been absorbed by habit
Aristotle may be regarded as the cultural barometer of Western history. Whenever his influence dominated the scene, it paved the way for one of history's brilliant eras; whenever it fell, so did mankind.
Any polis which is truly so called, and is not merely one in name, must devote itself to the end of encouraging goodness. Otherwise, political association sinks into a mere alliance.
The God of St. Thomas and Dante is a God Who loves, the god of Aristotle is a god who does not refuse to be loved; the love that moves the heavens and the stars in Aristotle is the love of the heavens and the stars for god, but the love that moves them in St. Thomas and Dante is the love of God for the world; between these two motive causes there is all the difference between an efficient cause on the one hand, and a final cause on the other.
I sit with Shakespeare and he winces not. Across the color-line I move arm in arm with Balzac and Dumas, where smiling men and welcoming women glide in gilded halls. From out the caves of the evening that swing between the strong-limbed earth and the tracery of the stars, I summon Aristotle and Aurelius... and they come all graciously with no scorn nor condescension. So, wed with Truth, I dwell above the Veil.
It is easy to understand that in the dreary middle ages the Aristotelian logic would be very acceptable to the controversial spirit of the schoolmen, which, in the absence of all real knowledge, spent its energy upon mere formulas and words, and that it would be eagerly adopted even in its mutilated Arabian form, and presently established as the centre of all knowledge.
As Aristotle said, 'Excellence is a habit.' I would say furthermore that excellence is made constant through the feeling that comes right after one has completed a work which he himself finds undeniably awe-inspiring. He only wants to relax until he's ready to renew such a feeling all over again because to him, all else has become absolutely trivial.
You could give Aristotle a tutorial. And you could thrill him to the core of his being. Aristotle was an encyclopedic polymath, an all time intellect. Yet not only can you know more than him about the world. You also can have a deeper understanding of how everything works. Such is the privilege of living after Newton, Darwin, Einstein, Planck, Watson, Crick and their colleagues. I'm not saying you're more intelligent than Aristotle, or wiser. For all I know, Aristotle's the cleverest person who ever lived. That's not the point. The point is only that science is cumulative, and we live later.
Aristotle maintained that women have fewer teeth than men; although he was twice married, it never occurred to him to verify this statement by examining his wives' mouths.
The void is 'not-being,' and no part of 'what is' is a 'not-being,'; for what 'is' in the strict sense of the term is an absolute plenum. This plenum, however, is not 'one': on the contrary, it is a 'many' infinite in number and invisible owing to the minuteness of their bulk.
Every science seeks certain principles and causes for each of its objects—e.g. medicine and gymnastics and each of the other sciences, whether productive or mathematical. For each of these marks off a certain class of things for itself and busies itself about this as about something existing and real—not however qua real; the science that does this is another distinct from these.
Children should be educated and instructed in the principles of freedom. Aristotle speaks plainly to this purpose, saying, 'that the institution of youth should be accommodated to that form of government under which they live; forasmuch as it makes exceedingly for the preservation of the present government, whatsoever it be.
An Aristotle was but the rubbish of an Adam, and Athens but the rudiments of Paradise.