People are worse than dogs. Tell me about it.

Remember that sentence? Some people say that some people's conscience is eaten by dogs, and dogs say that we don't eat some people's conscience. There are some people whose conscience is so bad that they don't even like dogs. However, we must believe that human nature is good, or that there are many good people. As long as you treat each other sincerely, many times, you can really change your heart.