I think of a hero as someone who understands the degree of responsibility that comes with his freedom.

选自汉·桓宽《盐铁论·散不足》。这句话以积土成山、列树成林为喻，说明积少成多、打好基础的重要性。

The story is not in the plot; the plot is what happens, the story is what it means.

In chemistry, as in life, the most transformative reactions often occur at the boundaries between disciplines.