Many eminent men have found a sort of gloomy comfort in this idea, but science has now opened up possibilities for the future which makes this theory less defendable.

许多士在个想法中找到了一种令沮丧的安慰，但科学现在为未来开辟了可能性，得个理论不那么可靠。

We're in an oil-based economy. And we should have the type of energy security which allows us to have defendable supply lines and not pay for our oil to those who want to do harm to the United States.

我们处于以石油为基础的经济中。我们应该有样一种能源安全，让我们有可防御的供应线，而不是向那些想伤害美国的支付我们的石油费用。