The true value of a forest cannot be measured in board feet alone; its worth is in the life it sustains.

最伟大的发现往往来自意想不到的地方。

The brave may not live forever, but the cautious do not live at all.

世界上充满了自童年以来从未以开放的心态面对开放门户的人。

模型检查是验证硬件和软件系统正确性的强大工具。