移民可以对创新和生产力产生积极影响。

The important thing is not to stop questioning. Curiosity has its own reason for existing.

每个数学问题都有解决方案，但并非每个解决方案都显而易见。

Learn how to tie a bowline knot. Practice in the dark. With one hand. For the rest of your life you’ll use this knot more times than you would ever believe.

写作是抵抗历史的抹去。