To sing of one's land is to love it twice.

解释：先前所使用的，现在或许要抛弃。现在要抛弃的，将来或许会用到。

The power of science lies in its universality and objectivity, it transcends culture and national boundaries.

The psychologist must be a dispassionate observer.

当我们有目的地疏伐森林时，我们不是在夺走生命，而是在为更多生命的繁荣腾出空间。

Sun don't shine forever, but as long as it's here then we might as well shine together.

To solve the hard problem, we may need to expand our physical worldview.