There cannot any one moral rule be proposed whereof a man may not justly demand a reason.
There are always reasons for murdering a man. On the contrary, it is impossible to justify his living. That’s why crime always finds lawyers, and innocence only rarely.
The world of reason is to be regarded as a great and immortal being, who ceaselessly works out what is necessary, and so makes himself lord also over what is accidental.
The unreasonableness of a thing is no argument against its existence, but rather a condition thereof.
The rebel does not ask for life, but for reasons for living.
The reason you will not say it is, when you say it, even to yourself, you will know it is true.
The reason for living was to get ready to stay dead a long time.
The question is not, “Can they reason?” nor, “Can they talk?” but “Can they suffer?
The public use of man’s reason must always be free, and it alone can bring about enlightenment among men.[Der öffentliche Gebrauch seiner Vernunft muß jederzeit frei sein, und der allein kann Aufklärung unter Menschen zu Stande bringen.]
The march of God in the world; its ground or cause is the power of reason realizing itself as will.
The man who listens to Reason is lost: Reason enslaves all whose minds are not strong enough to master her.
The belly is the reason why man does not so readily take himself for a God.
