For 10 points, name this German Enlightenment author of Critiques on Judgment and Pure Reason.
In one of this thinker's works, he used the term sensus communis to define an ability all people use to reflect on actions. This man wrote an essay which included a provision for removing all standing armies and which influenced democratic peace theory. Lying would be considered immoral by this author of "Perpetual Peace" because, according to him, the morality of an action depends on whether or not it is a universal law. This thinker described synthetic knowledge that is a priori, and introduced the categorical imperative in Groundworks on the Metaphysics of Morals. For 10 points, name this German Enlightenment author of Critiques on Judgment and Pure Reason.
In one of this thinker's works, he used the term sensus communis to define an ability all people use to reflect on actions.
Immanuel Kant