Psychological truth is what stands the test of life.
Economics is the study of how societies use scarce resources to produce valuable goods and services and distribute them among different individuals. If we think about the definitions, we find two key ideas that run through all of economics:
Mathematics is the language of the universe, and through it, we can unlock the secrets of existence.
苦难是智慧的学校。
小说是一种反映世界的镜子。