Modern thought begins with Kant.- Stanford Encyclopedia of Philosophy
STUDENT:Scientific thought changes every day, but new ideas will only be valid if they build upon and unite current findings, evidence, and theory. Einstein's relativity is the perfect example. Einstein turned Newtonian physics upside down, but the entry level physics class taught here and at every university in the world differs only in the slightest from what Newton wrote in his
Principae four hundred years ago. Why? Because what Newton found is based on empirical evidence and cannot be erased, only seen from a more enlightened angle. Tomorrow physicists may find that the universal gravitational constant isn't universal or constant (which is quite likely), but that will not change the fact that objects fall at 9.8 m/s^2 on the surface of the Earth. The idea that we shoot beams out of eyes, bounce them off objects, and collect them again in our eyes to see will never be true, regardless of how you look at it. Science without empirical evidence is nothing.
TEACHER:Though I took issue with you in class, which is after all my job, we actually agree on quite a bit. I would certainly agree that science without empirical evidence is nothing. Though I might phrase it as the German philosopher
Immanuel Kant did: Concepts without intuitions are empty; intuitions without concepts are blind. Others have translated it this way: Experience without theory is blind, but theory without experience is mere intellectual play.

This famous phrase is just one declaration in Kant's very extensive and indisputably brilliant argument, presented in his
Critique of Pure Reason, in which he shows and dramatically exposes the radical limitations and previously hidden assumptions underlying both empiricist and rationlist science, the prior focusing on direct observation and the latter on theoretical speculation. The brilliance of Kant's argument derives from his radical rejection of any simple combination or blending of the two methods. Any middle course between the two, Kant argues, must take the a construction, one which necessarily and openly acknowledges the we have no immediate access, either rational or experience, to entities as the really are in themselves.
For Kant, all substances, both external and internal to consciousness, and indeed consciousness itself, are nothing but representation whose existence and comprehension depends in an absolutely fundamental and
a priori manner (before all conscious thought) on certain concepts of the understanding and reason which cannot discovered neither through research or logic but must be "transcendentally deducted". In fact, it's only because these categories of mind are operating within us at all times that we are able to do research and logic at all. According to Kant, not only are all objects in the world mere representations, but in fact the entire world itself, experienced as a meaningful totality, is nothing but a grand construct assembled, or to use Kant's term "synthesized" out of the representations from which human experience is composed.

Composition is the key term here. It brings to mind not just the act of writing, which was fundamental to Kant's critical method of arriving at truth, but also because it brings to mind musical composition. Because for Kant all human endeavor, including scientific research, is, like musical composition, conditioned by and expressive of the human will. We do not simply discover the laws of Nature, but as far as Kant is concerned - and the extent of his influence on both the Sciences and the Humanities is quite literally incalculable - we veritably write the laws of nature ourselves, always in accordance to human needs and desires. Nature is neither God's creation nor is it simply a collection of dead parts, but Nature is a symphony which the great scientists of history have written and revised, over and over again, over the course of many centuries.

Though much neglected in our day, one of Kant's greatest disciples was Arthur Schopenhauer, who went on to influence a wide number of thinkers such of
Nietzsche and
Freud, who we still to consider giants for all time and whose work continues to fuel critical debates such as those taken up by
Jean-Pierre Vernant. Famously, Schopenhauer pronounced Music, an art form which previously had been considered merely acoustic ornamentation (i.e., Muzak) to be the supreme form of art, precisely because music most directly reflects the states and movements of the human Mind. But what Schopenhauer says of music is equally true of the sciences. Science, even in its most objective forms, never tells us simply how things really are in actual reality, but rather it expresses the variety of human interests and needs of the culture and society which sustains it.

So much extensive writing on these topics on these topics over the last two hundred years it almost boggles my mind when I consider where I might begin to direct someone who wanted to know more. I'll mention just a very few books below. Trust me, there are thousands more. Do understand this at least, Kant's contribution to the theory of knowledge and the practice of science is, as I said above, quite literally incalculable - by which I mean not only that his influence was immense but also that his ideas through forever into doubt the belief that Cartesian numeracy and calculation can reveal the nature of things-in-themselves.Kant knew this full well, and for that reason he named his abbreviated version of the
Critique of Pure Reason the
Prolegomena to Any Future Metaphysics - whose title means, that preparatory study which must be undertaking before any meaningful investigation of nature can begin. And what is the fundamental commonsense assumption of which Kant labors in the book to disabuse his reader - the belief that Nature exists at all.
So, what have I been reading on my own lately?
This first book, by the celebrated philosopher
Jurgen Habermas, picks up on certain key terms I invoke in my writings above.

This next book is a contemporary classic in the critique of the rational scientific method, written by
Paul Feyerabend, a philosopher and historian of science who first trained to be a musician.
This next book was recently issued to great acclaim by MIT Press, one of the finest academic publishers in the world.
This last book, which I'm reading right now on my own, was very recently issued by the University of Chicago Press. It is a passionate but deeply informed and meditated defense of the attack on objectivity, written - perhaps to the surprise of some - by own of today most thoughtful scholars of
literature, George Levine.
But, again, to mention these four titles is to scratch just the outermost surface of the surface. I could go on and on and on. Certainly other have:
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