There must be someone who says he can work with Hegel’s doctrines, and probably he thinks he couldn’t do it with Aristotle writings.
Yes, Feuerbach, Marx, Engels…
Curiously, Hegel’s philosophy works kind of like the “Borg” in Star-Trek: it just assimilates all of its adversaries, instead of refuting them.
But there are objective reasons for rejecting Hegel’s system: for one thing, it permits patent contradictions; it is a true “ideology” that allows nothing to contradict it; it makes affirmations that go against simple, everyday experience.
<…> Based only on that, it could not be said that Aristotle is fundamentally sound because you think he is fundamentally sound.
No, of course not. But see below.
<…> However, you just have taken a step back: how do you determine which are the best theories?
Let’s take a step back ourselves.
When we evaluate a theory of any kind—philosophical, theological, scientific—there are objective epistemological criteria we can use to see if it is correct, or at least viable, or not. For example:
(1) It should not contradict anything that is evident to all people.
Contra factum non argumentum est. (See below for more comments on this idea.)
(2) It should be logically coherent. No patent contradictions, or circular reasoning, or any other logical fallacies.
(3) More derived and difficult conclusions (relations, in your parlance) should be based on the ones that are more direct and easily known.
(4) A discipline should respect its ambit and method. The First Science (philosophy) should deal with the most fundamental causes and properties of reality; second sciences (empirical sciences, mathematics, history, grammar, or whatever it is) should seek the causes and properties of their object of study. Neither level should interfere with the other (although they can, of course, mutually illuminate one another).
(That is why, more often than not, the
particular findings of physics or chemistry do not fundamentally alter the findings of philosophy: they do not place the ultimate causes in doubt, just the proximate or secondary causes. Moreover, philosophy has the role of discovering the foundation for the second sciences; however, people can legitimately conduct those second sciences even when they do not know the foundation.)
When we examine Aristotle’s system, we find that it fairs rather well against these criteria. It needs some purification in order to pass criterion 4, and there are cases in which Aristotle fails to follow his own logic. However, on the whole the system is coherent and squares with the notions that are evident to everyone. We can work with Aristotle and improve his system.
On the other hand, Hegel, for example, has a lot of far-fetched ideas that do not square with our experience, uses highly circular reasoning, admits flat-out contradictions, and frequently draws strictly scientific (as in empirical science) conclusions (many of which have since been convincingly refuted). Hence, although some of his ideas are interesting, his system, as a whole, does not work.
A theory (even “the best one”) is a system of relations. <…>.
What I am trying to say is that those relations need to be grounded ultimately in—if I can use the term—first-order relations: i.e., ones that are taken directly from sensory evidence.
Aristotle said that any reasoning has to start with evident statements which, as a consequence, do not need a demonstration. But I think he was aware that those statements are not evident to everybody. He didn’t reflect on it anymore.
Perhaps not, but Aquinas did. He says that things can be evident in themselves (
per se nota), but that does not necessarily mean that they can be
easily known by all men. For example, that the square of 854 is 729316 is
per se notum, but because of its difficulty, it is only known to experts. To found a science, we have to begin with things that are not only
per se nota, but also easily known by all men (
quoad nos).
Aquinas makes a great analogy on this score. What is more luminous per se? A lamp, or the sun? The sun, of course. But which one is easier for us to look at? The lamp, because the sun is actually too bright for our eyes. On the other hand, a stone in a dark room would be impossible to see, because it produces no light at all.
In the same way, some things are difficult to know because they are so poor, so lacking in consistency (one thinks in modern physics of quantum indeterminism). Other things are difficult to know because they are too rich, and they overpower our intellects (that is the case, for example, with God). In order to get to either extreme, we need to begin with what is most easily knowable
by us (
quoad nos): which is the things that are accessible to our senses.
That is why I think the foundation of our judgement should not be “the best theories”, but the sets of experiences that “the best theories” intend to explain (imitate).<…>
What you are saying is reasonable, but see my comments above for my full thoughts.
There is nothing unusual on starting with what we believe are sound statements, but we should always remain conscious of our being humans, that is, creatures who simultaneously belong to two realms: the realm of interactions and the realm of relations. If you base all your intellectual work on systems that you received already done, you could build something more complex, but you will lose your chance to make it more powerful. Aristotle is dead, and as a consequence, he is pure relation now. You are alive (you interact), but you can make the mistake of behaving like a dead man.
I treat Aristotle as a good starting point, that is all. We can expand on his insights, and correct him if necessary.