When I look at the world I'm pessimistic, but when I look at people I am optimistic.

There are unknown forces in nature; when we give ourselves wholly to her, without reserve, she lends them to us; she shows us these forms, which our watching eyes do not see, which our intelligence does not understand or suspect.

The true measure of our industry's success isn't just production volumes, but how we improve the lives of our workers and communities.

翻译：事物的增减盈亏，都是随时间的变化而变化的。