With us philosophy is not practised as a private art, as it was by the Greeks, but has a public place, and should therefore be employed only in the service of the state.
What is your aim in philosophy? — To shew the fly the way out of the fly-bottle.[Was ist dein Ziel in der Philosophie? — Der Fliege den Ausweg aus dem Fliegenglas zeigen.]
This actual world of what is knowable, in which we are and which is in us, remains both the material and the limit of our consideration.
Only the descent into the hell of self-knowledge can pave the way to godliness.[Nur die Höllenfahrt des Selbsterkenntnisses bahnt den Weg zur Vergötterung.]
To teach how to live without certainty, and yet without being paralyzed by hesitation, is perhaps the chief thing that philosophy, in our age, can still do for those who study it.
To choose doubt as a philosophy of life is akin to choosing immobility as a means of transportation.
Thoughts without content are empty, intuitions without concepts are blind.[Gedanken ohne Inhalt sind leer, Anschauungen ohne Begriffe sind blind.]