数学之美在于它能够以精确而优雅的方式描述世界。

The greatest danger to American agriculture is the loss of the family farm.

追逐梦想永远不会太晚。

我不在乎别人怎么说我，我知道我是谁。

Success is not final, failure is not fatal: It is the courage to continue that counts.

地球上有黑暗的阴影，但相比之下光明更强大。

The paper industry has a responsibility to lead the way in environmental stewardship.

The essence of a brand is trust, and trust is built over time with sincerity.

可持续性不是一种趋势，而是我们对后代的责任。