The teacher must believe in the potential of his students. He must see in each one of them a spark of the divine fire.
The writer must believe that what he is doing is the most important thing in the world. And he must hold to this illusion even when he knows it is not true.
我对未来真的很兴奋。我认为最好的还在后头。
The most sustainable tree is the one that's still standing.
We must balance the need for energy with the need to protect the environment.