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.
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.
To choose doubt as a philosophy of life is akin to choosing immobility as a means of transportation.
The man whom philosophy leaves cold, and the man whom real faith does not illuminate, may be assured that the fault lies in them, not in knowledge and faith. The former is still an alien to philosophy, the latter an alien to faith.
Philosophy cannot teach the state what it should be, but only how it, the ethical universe, is to be known.