心理学必须植根于生物学才能成为真正的科学。
Psychology must be grounded in biology to be truly scientific.
Lightness is not just physical, but also spiritual.
If you have an apple and I have an apple, and we exchange apples, we both still only have one apple. But if you have an idea and I have an idea, and we exchange ideas, we each now have two ideas.
The only way to make money in the market is to not lose it.
解释：有了过错一定要悔改，干了坏事肯定会觉得害怕。