Sustainability is not an option—it's a responsibility we owe to the next generation.

舞台是我们感觉最有活力的地方。

因此，生产的最终条件是生产条件的再生产。

When you read,don't just consider what the author thinks,consider what you think.

生活就是成长和改变。当你停止成长，你就停止了生活。

The individual has to fashion himself out of the material given by his culture.

Every scientist has a responsibility to consider the broader implications of their work.

我认为最重要的是不要满足于现状。

It is a fine thing to have ability,but the ability to discover ability in others is the true test.

The great and chief end, therefore, of men's uniting into commonwealths and putting themselves under government is the preservation of their property.