To know this world is to love it, and to love it is to grieve for it.

The first essential component of social justice is adequate food for all mankind.

实现明天的唯一限制将是我们今天的怀疑。

One can choose to go back toward safety or forward toward growth. Growth must be chosen again and again; fear must be overcome again and again.

不幸之人有权结束自己的生命，尽可自行决定。但是，那将铸成大错。生命虽不幸，总有可为，也总可有所作为。活着就有希望。