The weight of the past is heavier than the future.

Those whose words and deeds are inconsistent are often not respected.

一件事情都不能做到有始有终，就不要去操持其他的事情；一物也不明白，就不要追求博闻广记。

The stranger is close to us, insofar as we feel between him and ourselves common features of a national, social, occupational, or generally human, nature. He is far from us, insofar as these common features extend beyond him or us, and connect us only because they connect a great many people.

The joy of chemistry is in seeing the invisible become visible.

The truth is, we are all waiting to be told who we are.

这类波可以像光波一样被反射、折射和偏振。