The individual can understand his own experience and gauge his own fate only by locating himself within his period, that he can know his own chances in life only by becoming aware of those of all individuals in his circumstances.

Emotions are biological signals that prepare the organism for action.

护理是关于关心人，而不仅仅是治疗疾病。

数学是上帝用来书写宇宙的语言。