"Innocence always calls mutely for protection when we would be so much wiser to guard ourselves against it: innocence is like a dumb leper who has lost his bell, wandering the world, meaning no harm."

电报不仅是一项发明，而且是团结人类的手段。

Sustainability isn't an option; it's a responsibility we owe to future generations.

唯一干扰我学习的是我的教育。

当你停止相信的那一刻，你就已经失败了。