In this world, there are two things worth looking up to throughout our lives: one is the bright starry sky above our heads, and the other is the noble moral law in people's hearts. The phrase "the starry sky above our heads and the moral law in our hearts" comes from Immanuel Kant, the last major philosopher during the Enlightenment and a representative figure in German thought. The original sentence is that in this world, there are two things worth looking up to throughout our lives: 1. It is the bright starry sky above our heads, and the second is the noble moral law in people's hearts - Kant's "Critique of Practical Reason". A person's shortcomings come from his era, but his virtue and greatness belong to himself.