I believe that knowledge is the result of human understanding of the objective world (including human beings) in practice. By drawing rules from lots of experiments and experiences, people help future generations to have a better life. Just as primitive people learned to cook food by fire, they passed on their experience to their descendants, making progress in human development.

I feeling about that belief is more like a value that is known and accepted by the public. It is the motivation that sustains people’s efforts to achieve their personal goals. For example, a person believes in the existence of God because God is the most ideal state in his mind. I believe in happiness, so I give myself some reasons to be happy every day.

For the opinion, I think that opinions are the positions that you want to express in a situation from a personal perspective. It has a strong personal style, but also contains a certain degree of uncertainty.