Nature is as well adapted to our weakness as to our strength.The incessant anxiety and strain of some is a well nigh incurable form of disease.大自然既能适应我们的长处，也能适应我们的弱点。有些人无穷无尽的忧患焦虑，成了一种几乎医治不好的疾病。

Confucius said, "To know that we know what we know, and that we do not know what we do not know, that is true knowledge."孔夫予曾说：“知之为知之，不知为不知，是知也。”

生活中的很多烦恼是不必要的，其实人真正只需要简单的必需品就够了，但欲望趋势着我们去想要更多，更过，烦恼也随着增多。