The awareness of the ambiguity of one's highest achievements, as well as one's deepest failures is a definite symptom of maturity.

Only the philosophical question is perennial, not the answers.

Our search for such [moral] principles can start with . . . the unconditional imperative to acknowledge every person as a person. If we ask for the contents given by this absolute, we find, first, something negative-the command not to treat a person as a thing. This seems little, but it is much. It is the core of the principle of justice.

Man and nature belong together in their created glory – in their tragedy and in their salvation.

I have given no definition of love. This is impossible, because there is no higher principle by which it could be defined. It is life itself in its actual unity. The forms and structures in which love embodies itself are the forms and structures in which love overcomes its self-destructive forces.

The citizens of a city are not guilty of the crimes committed in their city; but they are guilty as participants in the destiny of [humanity] as a whole and in the destiny of their city in particular; for their acts in which freedom was united with destiny have contributed to the destiny in which they participate. They are guilty, not of committing the crimes of which their group is accused, but of contributing to the destiny in which these crimes happened.

Every institution is inherently demonic.