What can we know, understand?
“Knowing” depends on both our awareness (ratio) and perception of the world (experience).
Ratio and perception act as a filter and limitation on what we can know.
Epistemology – science around “what is knowable” and the conditions of knowledge, etc.
Categories a priori
Space and time
plus 12 categories of rational thinking
God cannot be proven, no sensual input for experiments.
Morality – can also not be proven – putting philosphers out of work
Act on inner principles
that could also serve as basis for general law
Second book finds a workaround – “practical ratio” – explores the ways how we can decide to guide our choices in life. Finds only five possibilities:
Hedonism
Utilitarianism
Eudaimonia (Aristoteles)
Legalism
Kantesian Maxim
Make your principle of action such, that it could serve as basis for general law.
The above summary is a condensed note from the presentation by Dr. Ziegler in German.
