化学的进步以新元素的发现和分析方法的改进为标志。
让我们去创造明天,而不是为昨天担忧。
我不可能让所有人都喜欢我,因为我不是神。
每一块石头都有一个故事,而我们的职责是发掘它的潜力。
The heart of the educator must be a living flame, a fire that can ignite the souls of the young.
成功不在于终点,而在于旅程。
I'm not a person who gives up on my strength.
By the help of microscopes, there is nothing so small as to escape our inquiry; hence there is a new visible world discovered to the understanding.