Sustainability isn't an option anymore—it's a necessity for any business that wants to thrive in the 21st century.
可持续性不再是可选项，而是任何想在21世纪蓬勃发展的企业的必需品。
The state, therefore, has not existed from all eternity. There have been societies that did without it, that had no notion of the state or state power. At a certain stage of economic development, which was necessarily bound up with the split of society into classes, the state became a necessity.
认为仅仅因为理解了行为改变就会发生，这是领导力发展中最大的误区之一。