The art of progress is to preserve order amid change and to preserve change amid order.
进步的艺术是在变化中保持秩序，在秩序中保持变化。
Life is a tragedy for those who feel, and a comedy for those who think.
We need to think about digital skills in the same way we think about literacy and numeracy.
Love is the most powerful force in the world.
光的理论实际上是物理学两大理论的交汇点，即粒子理论和波动理论。