“Your vocation is not merely to know, but to act according to your knowledge”: this is loudly proclaimed in the innermost depths of my soul, as soon as I recollect myself for a moment and turn my observation inward upon my self. “You are here, not for idle contemplation of yourself, or for brooding over devout sensations – no, you are here for action; your action, and your action alone, determines your worth.”

The practical reason is the root of all reason. […] I am hungry, not because food is before me, but a thing becomes food for me because I am hungry; similarly, I act as I do not because a certain end is to be attained, but the end becomes an end to me because I am bound to act in the manner by which it may be attained.

Everything that is is good and absolutely legitimate. There is but one world possible – a thoroughly good world.

Voltaire's procedure is an authentic example of sane sound sense which Voltaire possessed in such high measure, while others babble about it all the time in order to pass off their insanities as sound sense.

Here there are Kantians in droves. […] All imaginable dogmas have been stamped as postulates of practical reason, and wherever theoretical and historical proofs are lacking, the practical Tübingian reason cuts the knot. […] Before you know it, the deus ex machina pops up, the personal individual being who sits up there in heaven!