Is it the distortion of human nature or the decline of morality? What are the jokes?

"Behind all this is the loss of morality or the distortion of human nature." This sentence comes from a program called "Moral Observation" before No.12 Middle School.

Classic famous sentences about the good and evil of human nature;

1, man is a tight rope between animals and superman, a rope across the abyss (Nietzsche).

2. Human beings are both powerful and weak, both humble and lofty, both insightful and often blind (Diderot).

If a person does not take off and become an angel, there is no doubt that he will sink into the devil. He can't stay in animal nature. The most savage man is not a beast, he is worse, very bad (Coleridge).

4. Man is a god who has lost his position (Emerson).

Man is actually rational, so he exists because he is a purpose, not just for this or that tool of will (Kant).

6. Man is the ultimate goal of the creation of this world, because man is the only concept in the world that can form a purpose, and it is a system that can form a purpose from a large number of purposeful things with the help of his reason (Kant).