心有其理，理性难明。
"The heart has its reasons which reason knows not."
Sustainability in dairy production isn’t an option—it’s a necessity for future generations.
The coal industry must evolve to meet modern environmental standards, or it will become obsolete.
当他未得到官职的时候，唯恐得不到；已经得到了官职，又唯恐丢失掉。假若害怕丢失掉，便什么坏事都能干出来。
The personal is historical, and the historical is personal.