In chemistry, the smallest change can lead to the biggest revolutions.
The decline of violence may be the most significant and least-appreciated development in the history of our species.
一个奇怪的事实是,关于塑造地球表面的力量的性质,人们持有完全相反的观点,这反映了我们目前知识的不完整状态。
在不确定的时代,灵活性比长期计划更重要。