He is a student of Robert Spaemann, and was his assistant from 1985 to 1992 at the Ludwig Maximilian University of Munich, where he completed graduate and postgraduate studies in philosophy, Catholic theology, political science and law.
In his dissertation supervised by Robert Spaemann, Die Überwindung der Metaphysik, Schweidler deals with the distinction between metaphysical and philosophical thinking.
In four paradigmatic investigations of the metaphysical critiques of Rudolf Carnap, Oswald Spengler, Ludwig Wittgenstein and Martin Heidegger, he elaborates the characteristics of what he refers to as philosophical “intellectual power”.
Issuing from his lecturing activity in the area of practical, particularly political philosophy, his book Der gute Staat (“The Good State”) was published in 2002.
[3] In 2006, Schweidler received the German Schoolbook Prize for the work edited together with Robert Spaemann, Ethik: Lehr- und Lesebuch (“Ethics: A Primer”).