政治被认为是第二古老的职业。我逐渐意识到它与第一职业（指卖淫）极为相似。

企业要发展，必须把食品安全放在第一位。

Every individual has a place to fill in the world and is important in some respect whether he chooses to be so or not.

Your attitude, not your aptitude, will determine your altitude.

The wild doesn’t reward the strongest or the fastest. It rewards the most adaptable.

生命的历史用化学语言书写。