To tax the larger incomes at a higher percentage than the smaller， is to lay a tax on industry and economy； to impose a penalty on people for having worked harder and saved more than their neighbors.

Every drop of oil saved through innovation is a step toward a cleaner future.

You know, I'm not always going to be around to help you...

我想揭示大自然的秘密，用来造福人类。我认为，在我们的短暂一生中，最好的贡献莫过于此了。

The quality of an organization's integrity determines the quality of its trust.