Fashion is a form of imitation and so of social equalization, but, paradoxically, in changing incessantly, it differentiates one time from another and one social stratum from another.

每个有纹身的人都有一个有趣的过去。

Positive emotions are not trivial luxuries, but instead may be critical necessities for optimal functioning.

In computer science, abstraction is the key to managing complexity.

大多数人都从众，他们的思想是其他人的意见，他们的生活是一场模仿，他们热衷于引旁人所述。

Knowledge is represented in the mind as symbolic structures.