"Books are the keys to understanding the world and ourselves."

The long-term success of a company depends on the flexibility and adaptability of its strategy.

解释：看到兔子再回头唤猎狗，还不算太晚；跑掉了羊再去修补羊圈，也不算太迟。

It's on the strength of observation and reflection that one finds a way. So we must dig and delve unceasingly.