Thus even if it cannot be all that difficult to leave to posterity the legacy of a systematic metaphysics, constructed according to the critique of pure reason, this is still a gift deserving of no small respect; to see this, we need merely to compare the culture of reason that is set on the course of a secure science with reason's unfounded groping and frivolous wandering about without critique, or to consider how much better young people hungry for knowledge might spend their time than in the usual dogmatism that gives so early and so much encouragement to their complacent quibbling about things they do not understand, and things into which neither they nor anyone else in the world will ever have any insight, or even encourages them to launch on the invention of new thoughts and opinions, and thus to neglect to learn the well grounded sciences; but we see it above all when we take account of the way criticism puts an end for all future time to objections against morality and religion in a Socratic way, namely by the clearest proof of the ignorance of the opponent.