Immanuel Kant was the only philosopher who managed to
combine rationalism with empiricism. He proved that there’s not only one way
or another. Combining reason and senses to prove reality is not an easy doing,
and explaining it is not easy either, so let’s take this step by step.
We have experiences and create memories. We remember, we
feel, we act. That’s how we work. But where does experience come from? Do we
feel it directly, or is it something that just exists? Until Kant, there were
two ways to understand experiences.
Berkeley believed that there is no procedure of inner
feeling. He believed that behind the impressions we get from our senses, there
must be some kind of material substrate that we cant realize directly. That’s
why, according to him, our ideas and what we acknowledge is all that reality
is. “For something to exist it means that it is being acknowledged”. He
supported that all that exists is souls and ideas and that reality is only one.
The most important part of his theory is that everything in this world (which
is not materialistic) exists inside God when it is not acknowledged by humans. He
supported that God is “a priori”, and whatever He acknowledges exists.
Hume, on the contrary, didn’t think that the mention of God
is essential. He believed that the imprinting of sensory impressions on the
mind is enough. He thought that there is more to the outside world than what we
can acknowledge, that we have a limited cognitive ability. As we can only
collect data from 5 sensors, he thought that reality is wider than what our
mind can understand. According to Hume, material objects have no objective
substance, and we create their representations based on personal impressions. Eventually,
he didn’t think that inductive generalizations have any real logical power.
Here is where Kant steps in as a pure empiricist. He took
the rational mechanism of the mind and the input of knowledge through senses
and made them cooperate. He made a new guess about the development of
experience: experiences provide the “data” that the mind is going to process,
and this data works as direct representations. The mind processes the
representations that it receives, and the data gets modified with previous data
of the mind. This shows that time and place are not dependent of experience but
rather the condition for empirical perception to exist. Experiences are blind
without understanding, and understanding is empty without experiences. According
to Kant, “real stuff” are phenomena organized by the mind.
It was a big step to bring two opposite philosophical
approaches into one. It may seem normal to some of us, but it’s not that easy
to realize it on our own. Bringing rationalism and empiricism in piece is, in
my opinion, one of the greatest achievements of man.
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