The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

要养活世界，我们必须首先尊重我们所拥有的资源。

The only good is knowledge, and the only evil is ignorance.

能源的未来不是要在化石燃料和可再生能源之间做出选择，而是找到确保可持续性和经济增长的正确平衡。