做东西的时候，总要多备上一些——额外的材料、额外的部件、额外的空间、额外的饰面。这些额外的东西可以为错误提供备份、减轻压力，还可以为未来储备资源。它们是最便宜的保险。
不要为变老而遗憾。这是许多人求之不得的特权。
The rise of China will inevitably lead to conflict with the United States, as it challenges the existing balance of power.
事实总是友好的，一个人在任何领域获得的每一点证据，都会让他更接近真相。
The only way to tell the truth is to speak without persuasion.
We have on this earth what makes life worth living.
Growth itself contains the germ of happiness.
"Writing is a journey, and every word is a step."