Immanuel Kant: The Critical Philosophy and Knowledge
Immanuel Kant: The Critical Problem
Kant poses four fundamental questions:
- What can I know?
- What should I do?
- What may I expect?
- What is man?
These are addressed respectively in the Critique of Pure Reason, the Critique of Practical Reason, the Critique of Judgment, and throughout his collective works. Kant explores these because he lived during the Enlightenment, a cultural movement arguing that humanity has reached maturity through the use of reason.
Theoretical Use of Reason
Kant examines the limits of human knowledge to determine:
- What constitutes genuine science.
- Whether metaphysics can be considered a science.
The Status of Metaphysics
There are three primary reasons to doubt that metaphysics is a science:
- It has failed to progress.
- There is no consensus among philosophers.
- It relies on a flawed method of trial and error.
Conditions for Scientific Knowledge
For a field to be considered scientific, it must meet three criteria:
- Universal: Applicable to all cases.
- Necessary: Its opposite is impossible without contradiction.
- Progressive: It must facilitate the accumulation of knowledge.
Scientific Judgments
Scientific knowledge relies on synthetic a priori judgments. These are universal and necessary (because they are a priori) and progressive (because they are synthetic).
The Copernican Revolution in Knowledge
For Kant, knowledge is the synthesis of two components:
- A priori: Universal and necessary elements found within the subject.
- A posteriori: Particular elements derived from sensory experience.
Kant transcends both Descartes (rationalism) and Hume (empiricism) by arguing that knowledge requires both elements. The subject structures knowledge, while the object provides the experience. This shift in focus toward the subject is known as the Copernican Revolution.
Philosophical Influences
- Wolff (Rationalism): Provided the idea that knowledge must be universal, necessitating an a priori factor within the subject.
- Hume (Empiricism): Highlighted the essential role of sensory experience.
- Rousseau: Taught Kant that scientific knowledge does not guarantee human happiness, necessitating an ethical complement.
- Pietism: A Protestant sect that instilled a strict ethical framework.
- Plato: Influenced Kant’s concept of the noumenon and the alignment of Platonic intellectualism with Kantian formal ethics.