读书须用意，一字值千金。
读书时刻苦用心，才能达到一字千金的层次。
Sustainability isn't a choice—it's a responsibility we owe to the next generation.
The secret of change is to focus all of your energy，not on fighting the old，but on building the new.
The inflationary universe model provides a possible explanation for the origin of the universe.
当一盏灯熄灭时，比它从未亮起时要黑暗得多。
The world is full of people who have never, since childhood, met an open doorway with an open heart.
世界上充满了自童年以来从未以开放的心态迎接开放门道的人。