能源的未来是多样化的,没有任何单一来源会占主导地位。
An act of goodness is of itself an act of happiness.
The universe we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil, no good, nothing but blind, pitiless indifference.
The beauty of the world has two edges, one of laughter, one of anguish, cutting the heart asunder.