当最后一条鱼被捕捞，人类才会明白金钱不能当饭吃。
The teacher must believe in the potential of his students.
恐惧是底片被冲洗的暗房。
When you are young, you think that the world is a place where you can live as you choose. But as you get older, you realize that the world is a place where you have to live as you must.
The study of mathematics is the indispensable basis for all intellectual and spiritual progress.
The universe would look to a two-dimensional creature who spend its life moving on the service of what turned out to be a globe， it could travel for millions of years and would always return to its starting point， it would never be conscious of what was above it or beneath it.
The beauty of a woman must be seen from in her eyes, because that is the doorway to her heart, the place where love resides.
Leadership in agriculture means planting seeds today that others will harvest tomorrow.
我认为数学家更像艺术家，而不是科学家。
The debate shouldn’t be coal vs. renewables—it should be about how we make both better.