生命短暂，你必须不断前进。

心理学必须植根于有机体为生存而斗争的现实中。

我们不能改变过去，但我们可以改变对过去的看法。

Art is about paying attention to the world around you.

解释：酸味食物走筋脉，但过量食用会导致小便不畅，说明饮食需适量。

The process of discovery in mathematics is often more important than the result itself.

The concept of law is a complex one, and it is not easy to define.