Sustainability isn't an option; it's a necessity for the coal sector.

The concept of will is unnecessary in explaining behavior.

了解过去对于设计能够塑造更美好未来的政策至关重要。

Whether we are describing a king, an assassin, a thief, an honest man, a prostitute, a nun, a young girl, or a stallholder in a market, it is always ourselves that we are describing.

"The best way to predict the future is to create it."