This sentence comes from "The Critique of Pure Reason". The complete statement is: "There are only two things in this world that can deeply shock our hearts. One is the brilliant sky above our heads, and the other is the lofty moral law in our hearts."

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"The Critique of Pure Reason" is a philosophical work written by the German philosopher Immanuel Kant. The book was first published in 1781 and is the first of Kant's trilogy of philosophical masterpieces. , the second part is "Critique of Practical Reason" published in 1788, and the third part is "Critique of Judgment" published in 1790.