人类的思想和行为是自然的一部分，因此可以通过自然科学的方法来研究。
The worst enemy of life, freedom and the common decencies is total anarchy; their second worst enemy is total power.
Psychology must be independent of philosophy and physiology.
To write is to embark on a journey of self-discovery, where each word is a step closer to understanding the essence of our existence.